SIC 4922 Natural Gas Transmission

Enterprise Products Partners L.P. vs The Williams Companies Inc.

WatchlistEPD / WMBPrices through Oct 22, 2026

Why these are rivals: #1 and #3 by market value ($86B vs $79B) with SEC SIC 4922 (Natural Gas Transmission).

Rivals, but right now the price gap does not have a measured habit of closing, so there is no paper idea, whatever the gap.

  • Co-movement: daily return correlation, 252 sessions: 0.45 (needs >= 0.60)
Business leadership

EPD is the larger business

Annual revenue reported to the SEC. Scale, not market share.

YearEPDWMBLarger
2025$52.6B$11.9BEPD
2024$56.2B$10.5BEPD
2023$49.7B$10.9BEPD
2022$58.2B$11.0BEPD
2021$40.8B$10.6BEPD
2020$27.2B$7.7BEPD

EPD led in every year with figures for both. Market value: EPD $79.5B, WMB $86.1B.

Stock leadership

Neither is clearly ahead

Measured against the pair's own last 252 trading days.

The gap is 0.13 standard deviations, close to the usual relationship. 4 lead switches in the last year.

Price change3 mo6 mo12 mo
EPD-5.7%-3.5%+18.7%
WMB-4.6%-1.4%+13.3%
Relationship

Not a measured twin today

Only these tests can make a pair tradable on paper.

Pass
Aligned sessions: 2521 (needs >= 254)
Fail
Co-movement: daily return correlation, 252 sessions: 0.45 (needs >= 0.60)
Pass
Mean reversion: ADF t-statistic of the spread: -4.06 (needs <= -2.873 (5% critical value))
Pass
Speed: half-life of the spread, sessions: 5.69 (needs <= 63)
Data
Both stocks current
The twins over two years

Prices side by side, and the gap between them

EPD Enterprise Products Partners L.P. WMB The Williams Companies Inc.Price index, 100 = 2024-10-18. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).
100120140Oct 2024Oct 2025Oct 2026EPD 125WMB 135
Spread z-score: EPD relative to WMB, against the 252 sessions before each day. Above 0: EPD ahead; below 0: WMB ahead. Lines at +/-2 (idea) and +/-4 (stop).
-4stop-2idea0+2idea+4stopOct 2024Oct 2025Oct 2026
Data table (504 sessions)
DateEPD indexWMB indexzAhead
2026-10-22125.15134.89-0.13near the usual relationship
2026-10-21125.39139.04-1.02WMB ahead
2026-10-20126.73134.32+0.41near the usual relationship
2026-10-19126.11134.42+0.24near the usual relationship
2026-10-16126.18136.13-0.12near the usual relationship
2026-10-15121.90132.20-0.27near the usual relationship
2026-10-14122.65139.04-1.62WMB ahead
2026-10-13123.51142.42-2.15WMB ahead
2026-10-12123.06141.65-2.11WMB ahead
2026-10-09123.65138.79-1.34WMB ahead
2026-10-08125.94138.16-0.63WMB ahead
2026-10-07126.49136.48-0.12near the usual relationship
2026-10-06127.69138.25-0.22near the usual relationship
2026-10-05126.11135.24+0.08near the usual relationship
2026-10-02123.99134.72-0.31near the usual relationship
2026-10-01122.24132.20-0.16near the usual relationship
2026-09-30122.04129.81+0.34near the usual relationship
2026-09-29123.44131.07+0.40near the usual relationship
2026-09-28125.60131.74+0.77EPD ahead
2026-09-25125.94132.28+0.73EPD ahead
2026-09-24127.72134.80+0.60EPD ahead
2026-09-23128.75135.81+0.61EPD ahead
2026-09-22130.26135.56+1.02EPD ahead
2026-09-21131.84136.84+1.10EPD ahead
2026-09-18133.28137.61+1.25EPD ahead
2026-09-17131.77137.15+1.01EPD ahead
2026-09-16130.53135.41+1.10EPD ahead
2026-09-15133.00136.80+1.35EPD ahead
2026-09-14132.63137.41+1.14EPD ahead
2026-09-11133.31139.13+0.92EPD ahead
2026-09-10134.78139.08+1.25EPD ahead
2026-09-09134.75143.53+0.31near the usual relationship
2026-09-08133.07144.82-0.32near the usual relationship
2026-09-04133.45141.62+0.40near the usual relationship
2026-09-03134.24141.42+0.60EPD ahead
2026-09-02134.89143.54+0.30near the usual relationship
2026-09-01134.61143.68+0.21near the usual relationship
2026-08-31133.04143.33-0.06near the usual relationship
2026-08-28133.72140.81+0.57EPD ahead
2026-08-27133.82141.69+0.41near the usual relationship
2026-08-26134.13142.11+0.38near the usual relationship
2026-08-25131.15135.75+1.01EPD ahead
2026-08-24131.46135.54+1.12EPD ahead
2026-08-21130.26134.63+1.05EPD ahead
2026-08-20131.70136.90+0.88EPD ahead
2026-08-19130.64139.88+0.07near the usual relationship
2026-08-18132.42143.49-0.25near the usual relationship
2026-08-17132.32140.28+0.32near the usual relationship
2026-08-14133.31143.62-0.11near the usual relationship
2026-08-13130.29139.50+0.05near the usual relationship
2026-08-12129.95140.76-0.26near the usual relationship
2026-08-11129.75138.10+0.20near the usual relationship
2026-08-10130.19137.22+0.45near the usual relationship
2026-08-07129.37134.45+0.82EPD ahead
2026-08-06130.40137.05+0.53EPD ahead
2026-08-05129.27137.15+0.28near the usual relationship
2026-08-04130.64136.57+0.67EPD ahead
2026-08-03129.78134.51+0.91EPD ahead
2026-07-31130.40136.63+0.62EPD ahead
2026-07-30130.64135.43+0.90EPD ahead
2026-07-29132.52133.94+1.58EPD ahead
2026-07-28132.39134.00+1.54EPD ahead
2026-07-27130.64135.20+0.95EPD ahead
2026-07-24132.73141.33+0.20near the usual relationship
2026-07-23132.97143.72-0.20near the usual relationship
2026-07-22133.28142.27+0.12near the usual relationship
2026-07-21132.15140.11+0.30near the usual relationship
2026-07-20132.90141.63+0.16near the usual relationship
2026-07-17130.91140.15+0.04near the usual relationship
2026-07-16130.23142.72-0.58WMB ahead
2026-07-15128.58142.06-0.80WMB ahead
2026-07-14129.30145.11-1.21WMB ahead
2026-07-13131.29142.21-0.30near the usual relationship
2026-07-10127.72143.28-1.21WMB ahead
2026-07-09127.79144.10-1.36WMB ahead
2026-07-08129.54143.75-0.95WMB ahead
2026-07-07128.99143.39-1.00WMB ahead
2026-07-06124.98139.08-1.04WMB ahead
2026-07-02125.94139.69-0.96WMB ahead
2026-07-01125.15138.98-0.99WMB ahead
2026-06-30125.98141.98-1.37WMB ahead
2026-06-29125.63143.35-1.70WMB ahead
2026-06-26125.33148.82-2.78WMB ahead
2026-06-25126.25148.07-2.49WMB ahead
2026-06-24123.68144.90-2.50WMB ahead
2026-06-23127.24144.75-1.72WMB ahead
2026-06-22124.81143.14-1.96WMB ahead
2026-06-18125.43139.65-1.16WMB ahead
2026-06-17125.15136.08-0.52WMB ahead
2026-06-16124.91136.52-0.66WMB ahead
2026-06-15125.09136.54-0.63WMB ahead
2026-06-12127.66137.66-0.31near the usual relationship
2026-06-11127.76136.78-0.11near the usual relationship
2026-06-10129.78138.01+0.07near the usual relationship
2026-06-09128.00136.73-0.05near the usual relationship
2026-06-08128.58136.73+0.07near the usual relationship
2026-06-05129.58137.43+0.15near the usual relationship
2026-06-04130.84138.33+0.24near the usual relationship
2026-06-03130.19136.86+0.40near the usual relationship
2026-06-02129.23136.19+0.33near the usual relationship
2026-06-01127.52133.77+0.46near the usual relationship
2026-05-29126.08136.34-0.37near the usual relationship
2026-05-28128.51139.67-0.51WMB ahead
2026-05-27130.19142.04-0.61WMB ahead
2026-05-26131.60145.80-1.04WMB ahead
2026-05-22135.81149.87-0.94WMB ahead
2026-05-21135.26148.05-0.73WMB ahead
2026-05-20134.99148.74-0.91WMB ahead
2026-05-19136.39151.64-1.16WMB ahead
2026-05-18135.23148.38-0.81WMB ahead
2026-05-15134.44148.43-0.99WMB ahead
2026-05-14134.44148.38-0.99WMB ahead
2026-05-13131.22144.60-0.95WMB ahead
2026-05-12130.77142.72-0.70WMB ahead
2026-05-11129.88141.67-0.69WMB ahead
2026-05-08127.45137.43-0.38near the usual relationship
2026-05-07129.30139.32-0.36near the usual relationship
2026-05-06128.72140.87-0.77WMB ahead
2026-05-05131.94145.38-0.96WMB ahead
2026-05-04132.52144.02-0.59WMB ahead
2026-05-01130.33144.27-1.08WMB ahead
2026-04-30132.63145.74-0.89WMB ahead
2026-04-29132.93140.03+0.25near the usual relationship
2026-04-28131.84139.50+0.13near the usual relationship
2026-04-27130.98136.76+0.48near the usual relationship
2026-04-24130.23137.85+0.12near the usual relationship
2026-04-23129.68136.84+0.20near the usual relationship
2026-04-22129.34135.79+0.34near the usual relationship
2026-04-21127.52134.51+0.21near the usual relationship
2026-04-20126.49135.43-0.19near the usual relationship
2026-04-17125.67135.89-0.46near the usual relationship
2026-04-16127.93135.33+0.13near the usual relationship
2026-04-15127.14135.14+0.00near the usual relationship
2026-04-14127.66136.44-0.15near the usual relationship
2026-04-13128.24136.63-0.06near the usual relationship
2026-04-10128.00138.92-0.56WMB ahead
2026-04-09128.58139.08-0.48near the usual relationship
2026-04-08130.33139.44-0.19near the usual relationship
2026-04-07131.63141.41-0.31near the usual relationship
2026-04-06129.64138.64-0.19near the usual relationship
2026-04-02128.75137.51-0.17near the usual relationship
2026-04-01128.27137.18-0.21near the usual relationship
2026-03-31129.68139.00-0.27near the usual relationship
2026-03-30133.93138.41+0.65EPD ahead
2026-03-27134.61140.53+0.38near the usual relationship
2026-03-26134.00141.44+0.10near the usual relationship
2026-03-25133.65140.97+0.12near the usual relationship
2026-03-24131.56142.21-0.50WMB ahead
2026-03-23130.60140.57-0.40near the usual relationship
2026-03-20128.72138.29-0.37near the usual relationship
2026-03-19128.34141.44-1.00WMB ahead
2026-03-18126.94139.04-0.85WMB ahead
2026-03-17128.65140.74-0.82WMB ahead
2026-03-16127.90141.12-1.03WMB ahead
2026-03-13126.76140.07-1.07WMB ahead
2026-03-12125.39140.41-1.38WMB ahead
2026-03-11127.48142.09-1.26WMB ahead
2026-03-10125.84141.02-1.37WMB ahead
2026-03-09127.11139.76-0.96WMB ahead
2026-03-06128.75141.79-1.00WMB ahead
2026-03-05127.79142.80-1.32WMB ahead
2026-03-04127.38144.71-1.68WMB ahead
2026-03-03128.10144.92-1.60WMB ahead
2026-03-02126.42145.65-2.00WMB ahead
2026-02-27123.85142.70-2.02WMB ahead
2026-02-26123.30142.80-2.15WMB ahead
2026-02-25123.10141.27-1.97WMB ahead
2026-02-24124.37140.37-1.63WMB ahead
2026-02-23124.61139.38-1.45WMB ahead
2026-02-20124.57139.38-1.46WMB ahead
2026-02-19123.99137.83-1.33WMB ahead
2026-02-18123.75137.78-1.37WMB ahead
2026-02-17125.94137.43-0.96WMB ahead
2026-02-13127.52138.04-0.79WMB ahead
2026-02-12121.38135.85-1.49WMB ahead
2026-02-11121.49135.83-1.48WMB ahead
2026-02-10120.60131.47-0.97WMB ahead
2026-02-09120.49129.58-0.69WMB ahead
2026-02-06119.64127.81-0.56WMB ahead
2026-02-05120.22128.76-0.62WMB ahead
2026-02-04120.63126.93-0.27near the usual relationship
2026-02-03118.68130.83-1.21WMB ahead
2026-02-02113.43126.70-1.48WMB ahead
2026-01-30113.74128.46-1.70WMB ahead
2026-01-29116.90128.42-1.16WMB ahead
2026-01-28114.67127.81-1.45WMB ahead
2026-01-27113.67125.06-1.20WMB ahead
2026-01-26113.26122.78-0.93WMB ahead
2026-01-23113.23124.06-1.14WMB ahead
2026-01-22113.74121.70-0.69WMB ahead
2026-01-21112.99120.66-0.66WMB ahead
2026-01-20112.23117.48-0.28near the usual relationship
2026-01-16112.75117.55-0.21near the usual relationship
2026-01-15111.79115.15+0.02near the usual relationship
2026-01-14111.34115.95-0.19near the usual relationship
2026-01-13110.90115.53-0.20near the usual relationship
2026-01-12109.97113.75-0.07near the usual relationship
2026-01-09109.80115.20-0.35near the usual relationship
2026-01-08109.18116.79-0.72WMB ahead
2026-01-07108.64115.34-0.58WMB ahead
2026-01-06108.74113.64-0.29near the usual relationship
2026-01-05110.21116.81-0.56WMB ahead
2026-01-02110.21116.21-0.47near the usual relationship
2025-12-31109.87114.80-0.30near the usual relationship
2025-12-30110.04114.90-0.30near the usual relationship
2025-12-29109.39114.21-0.30near the usual relationship
2025-12-26109.22113.67-0.25near the usual relationship
2025-12-24109.94113.56-0.11near the usual relationship
2025-12-23110.08114.11-0.18near the usual relationship
2025-12-22109.80112.53+0.02near the usual relationship
2025-12-19109.46111.27+0.17near the usual relationship
2025-12-18109.63112.03+0.07near the usual relationship
2025-12-17109.73112.38+0.02near the usual relationship
2025-12-16108.91111.55+0.01near the usual relationship
2025-12-15110.73113.60-0.02near the usual relationship
2025-12-12110.11114.09-0.21near the usual relationship
2025-12-11110.38116.35-0.52WMB ahead
2025-12-10110.38115.55-0.40near the usual relationship
2025-12-09110.80117.55-0.65WMB ahead
2025-12-08112.10118.32-0.56WMB ahead
2025-12-05111.75119.96-0.87WMB ahead
2025-12-04111.75121.58-1.11WMB ahead
2025-12-03110.11117.55-0.79WMB ahead
2025-12-02109.63114.99-0.48near the usual relationship
2025-12-01111.48117.34-0.55WMB ahead
2025-11-28112.20116.37-0.29near the usual relationship
2025-11-26111.48115.01-0.20near the usual relationship
2025-11-25111.45113.39+0.05near the usual relationship
2025-11-24111.55113.50+0.05near the usual relationship
2025-11-21111.17113.85-0.06near the usual relationship
2025-11-20109.29112.51-0.16near the usual relationship
2025-11-19108.70112.47-0.25near the usual relationship
2025-11-18108.64113.01-0.34near the usual relationship
2025-11-17108.81114.42-0.54WMB ahead
2025-11-14110.56116.48-0.57WMB ahead
2025-11-13108.84113.81-0.44near the usual relationship
2025-11-12108.19115.41-0.79WMB ahead
2025-11-11107.81115.74-0.91WMB ahead
2025-11-10107.20115.74-1.02WMB ahead
2025-11-07107.13113.79-0.73WMB ahead
2025-11-06106.13110.66-0.41near the usual relationship
2025-11-05105.11109.89-0.46near the usual relationship
2025-11-04103.56107.93-0.40near the usual relationship
2025-11-03104.73112.74-0.99WMB ahead
2025-10-31105.52110.52-0.50WMB ahead
2025-10-30108.22110.05+0.02near the usual relationship
2025-10-29106.65108.82-0.04near the usual relationship
2025-10-28106.99109.99-0.17near the usual relationship
2025-10-27106.82110.14-0.23near the usual relationship
2025-10-24106.20109.78-0.27near the usual relationship
2025-10-23106.07112.55-0.75WMB ahead
2025-10-22106.37118.72-1.66WMB ahead
2025-10-21105.41119.06-1.90WMB ahead
2025-10-20105.11120.44-2.19WMB ahead
2025-10-17103.46119.29-2.33WMB ahead
2025-10-16103.67119.42-2.35WMB ahead
2025-10-15104.52121.81-2.61WMB ahead
2025-10-14105.52119.10-2.03WMB ahead
2025-10-13106.00119.71-2.07WMB ahead
2025-10-10105.52119.58-2.16WMB ahead
2025-10-09107.13120.51-2.04WMB ahead
2025-10-08108.50121.28-1.94WMB ahead
2025-10-07108.67122.17-2.06WMB ahead
2025-10-06107.95121.43-2.09WMB ahead
2025-10-03108.50123.15-2.27WMB ahead
2025-10-02107.68122.35-2.30WMB ahead
2025-10-01106.75121.64-2.37WMB ahead
2025-09-30107.16120.99-2.20WMB ahead
2025-09-29107.13122.17-2.40WMB ahead
2025-09-26108.40122.25-2.20WMB ahead
2025-09-25108.05120.91-2.06WMB ahead
2025-09-24108.64120.05-1.83WMB ahead
2025-09-23107.81117.25-1.54WMB ahead
2025-09-22107.51114.90-1.22WMB ahead
2025-09-19108.60114.80-1.03WMB ahead
2025-09-18109.05115.32-1.04WMB ahead
2025-09-17109.90112.72-0.51WMB ahead
2025-09-16108.88110.68-0.36near the usual relationship
2025-09-15108.81111.54-0.51WMB ahead
2025-09-12108.91112.32-0.62WMB ahead
2025-09-11109.42113.31-0.69WMB ahead
2025-09-10108.46112.22-0.68WMB ahead
2025-09-09108.12109.95-0.41near the usual relationship
2025-09-08107.85108.58-0.25near the usual relationship
2025-09-05108.53109.24-0.26near the usual relationship
2025-09-04108.98109.97-0.30near the usual relationship
2025-09-03109.12110.26-0.33near the usual relationship
2025-09-02109.66109.59-0.17near the usual relationship
2025-08-29110.14110.54-0.24near the usual relationship
2025-08-28109.53110.77-0.36near the usual relationship
2025-08-27108.36109.80-0.40near the usual relationship
2025-08-26108.57109.11-0.28near the usual relationship
2025-08-25108.60108.54-0.21near the usual relationship
2025-08-22109.32109.00-0.18near the usual relationship
2025-08-21108.33110.39-0.51WMB ahead
2025-08-20107.98109.28-0.41near the usual relationship
2025-08-19107.64108.04-0.30near the usual relationship
2025-08-18107.37107.94-0.33near the usual relationship
2025-08-15107.95109.74-0.49near the usual relationship
2025-08-14109.39109.51-0.29near the usual relationship
2025-08-13108.77110.50-0.50WMB ahead
2025-08-12107.40110.31-0.65WMB ahead
2025-08-11106.72110.89-0.81WMB ahead
2025-08-08107.75110.56-0.65WMB ahead
2025-08-07106.89110.56-0.76WMB ahead
2025-08-06107.03111.99-0.92WMB ahead
2025-08-05106.75112.68-1.04WMB ahead
2025-08-04106.34115.09-1.38WMB ahead
2025-08-01105.35115.11-1.51WMB ahead
2025-07-31106.20114.50-1.34WMB ahead
2025-07-30107.81113.14-0.99WMB ahead
2025-07-29107.71112.47-0.93WMB ahead
2025-07-28106.75109.84-0.75WMB ahead
2025-07-25108.12110.43-0.67WMB ahead
2025-07-24108.94112.20-0.78WMB ahead
2025-07-23107.95110.22-0.68WMB ahead
2025-07-22107.37109.55-0.67WMB ahead
2025-07-21106.79110.16-0.81WMB ahead
2025-07-18107.44113.35-1.08WMB ahead
2025-07-17107.06110.94-0.88WMB ahead
2025-07-16107.95111.69-0.86WMB ahead
2025-07-15107.95111.48-0.85WMB ahead
2025-07-14109.22112.76-0.85WMB ahead
2025-07-11109.29111.19-0.69WMB ahead
2025-07-10109.84110.35-0.55WMB ahead
2025-07-09109.32110.49-0.62WMB ahead
2025-07-08108.70110.18-0.66WMB ahead
2025-07-07107.30111.69-0.97WMB ahead
2025-07-03107.98111.99-0.93WMB ahead
2025-07-02107.75112.95-1.06WMB ahead
2025-07-01106.82112.15-1.08WMB ahead
2025-06-30106.27119.96-1.90WMB ahead
2025-06-27106.44119.69-1.88WMB ahead
2025-06-26106.55120.07-1.92WMB ahead
2025-06-25105.38115.91-1.66WMB ahead
2025-06-24106.65116.73-1.62WMB ahead
2025-06-23105.83115.51-1.61WMB ahead
2025-06-20106.89115.53-1.51WMB ahead
2025-06-18106.65112.91-1.28WMB ahead
2025-06-17107.03111.73-1.14WMB ahead
2025-06-16108.05112.97-1.16WMB ahead
2025-06-13109.84114.17-1.10WMB ahead
2025-06-12109.53114.74-1.20WMB ahead
2025-06-11110.04113.48-1.03WMB ahead
2025-06-10109.49112.61-1.01WMB ahead
2025-06-09108.70113.94-1.23WMB ahead
2025-06-06107.81115.66-1.49WMB ahead
2025-06-05106.44115.66-1.64WMB ahead
2025-06-04105.62114.82-1.66WMB ahead
2025-06-03107.88116.71-1.62WMB ahead
2025-06-02106.41117.02-1.82WMB ahead
2025-05-30105.62115.57-1.78WMB ahead
2025-05-29107.03115.11-1.60WMB ahead
2025-05-28107.71115.78-1.61WMB ahead
2025-05-27107.95114.78-1.50WMB ahead
2025-05-23107.23112.66-1.38WMB ahead
2025-05-22107.57110.29-1.12WMB ahead
2025-05-21108.94110.64-1.02WMB ahead
2025-05-20110.32112.24-1.05WMB ahead
2025-05-19111.55111.80-0.90WMB ahead
2025-05-16111.07112.28-1.00WMB ahead
2025-05-15110.66112.24-1.04WMB ahead
2025-05-14109.66111.15-1.04WMB ahead
2025-05-13108.84110.91-1.10WMB ahead
2025-05-12107.61109.11-1.05WMB ahead
2025-05-09106.61110.12-1.26WMB ahead
2025-05-08105.00108.98-1.31WMB ahead
2025-05-07103.91112.57-1.78WMB ahead
2025-05-06102.64112.11-1.88WMB ahead
2025-05-05102.81114.92-2.14WMB ahead
2025-05-02104.39114.59-1.97WMB ahead
2025-05-01102.36112.30-1.98WMB ahead
2025-04-30102.47111.86-1.94WMB ahead
2025-04-29105.52113.96-1.84WMB ahead
2025-04-28107.51113.94-1.65WMB ahead
2025-04-25106.99112.74-1.60WMB ahead
2025-04-24107.27113.85-1.69WMB ahead
2025-04-23105.21111.69-1.70WMB ahead
2025-04-22105.21111.15-1.66WMB ahead
2025-04-21103.05107.79-1.57WMB ahead
2025-04-17106.31111.96-1.65WMB ahead
2025-04-16104.32111.27-1.79WMB ahead
2025-04-15106.00111.80-1.69WMB ahead
2025-04-14103.91109.55-1.69WMB ahead
2025-04-11101.54107.70-1.77WMB ahead
2025-04-1099.21105.18-1.78WMB ahead
2025-04-09101.75107.75-1.78WMB ahead
2025-04-0899.69103.76-1.61WMB ahead
2025-04-07102.12104.76-1.47WMB ahead
2025-04-04105.72104.22-1.08WMB ahead
2025-04-03114.70112.74-1.05WMB ahead
2025-04-02116.69117.65-1.32WMB ahead
2025-04-01117.27115.68-1.11WMB ahead
2025-03-31117.00114.13-1.00WMB ahead
2025-03-28116.79113.04-0.93WMB ahead
2025-03-27116.35113.50-1.01WMB ahead
2025-03-26115.97114.50-1.14WMB ahead
2025-03-25114.80116.33-1.40WMB ahead
2025-03-24115.42116.67-1.39WMB ahead
2025-03-21116.00113.83-1.11WMB ahead
2025-03-20116.86114.11-1.07WMB ahead
2025-03-19116.52113.29-1.03WMB ahead
2025-03-18115.83111.54-0.94WMB ahead
2025-03-17116.24111.52-0.91WMB ahead
2025-03-14115.11109.38-0.83WMB ahead
2025-03-13112.99107.30-0.83WMB ahead
2025-03-12113.02107.52-0.85WMB ahead
2025-03-11113.67104.95-0.58WMB ahead
2025-03-10115.32103.17-0.29near the usual relationship
2025-03-07114.67103.86-0.41near the usual relationship
2025-03-06112.23104.30-0.65WMB ahead
2025-03-05113.40107.37-0.83WMB ahead
2025-03-04114.19108.48-0.87WMB ahead
2025-03-03115.59110.01-0.89WMB ahead
2025-02-28114.50111.12-1.08WMB ahead
2025-02-27112.47107.45-0.94WMB ahead
2025-02-26113.57108.67-0.96WMB ahead
2025-02-25114.02107.30-0.82WMB ahead
2025-02-24115.28109.49-0.91WMB ahead
2025-02-21114.26109.70-1.01WMB ahead
2025-02-20115.08111.63-1.11WMB ahead
2025-02-19115.32111.29-1.07WMB ahead
2025-02-18115.56110.39-0.99WMB ahead
2025-02-14114.60108.82-0.94WMB ahead
2025-02-13113.81109.74-1.08WMB ahead
2025-02-12112.85104.70-0.75WMB ahead
2025-02-11113.81105.50-0.75WMB ahead
2025-02-10113.50107.28-0.93WMB ahead
2025-02-07112.85106.84-0.95WMB ahead
2025-02-06112.65106.97-0.98WMB ahead
2025-02-05113.23108.58-1.08WMB ahead
2025-02-04113.06106.42-0.92WMB ahead
2025-02-03113.54107.33-0.97WMB ahead
2025-01-31111.89105.86-0.98WMB ahead
2025-01-30116.66108.08-0.81WMB ahead
2025-01-29115.32105.67-0.72WMB ahead
2025-01-28115.52105.42-0.69WMB ahead
2025-01-27114.63104.18-0.67WMB ahead
2025-01-24115.04113.77-1.39WMB ahead
2025-01-23115.39113.62-1.36WMB ahead
2025-01-22115.83113.06-1.30WMB ahead
2025-01-21116.83115.79-1.44WMB ahead
2025-01-17115.04112.95-1.37WMB ahead
2025-01-16115.39113.03-1.36WMB ahead
2025-01-15114.26110.79-1.29WMB ahead
2025-01-14114.63110.89-1.28WMB ahead
2025-01-13111.51107.01-1.22WMB ahead
2025-01-10110.25106.04-1.25WMB ahead
2025-01-08111.17107.70-1.32WMB ahead
2025-01-07109.42106.09-1.34WMB ahead
2025-01-06109.42106.59-1.39WMB ahead
2025-01-03109.08108.10-1.55WMB ahead
2025-01-02108.81106.72-1.48WMB ahead
2024-12-31107.47103.36-1.32WMB ahead
2024-12-30106.92103.44-1.38WMB ahead
2024-12-27106.48103.02-1.40WMB ahead
2024-12-26106.72103.06-1.39WMB ahead
2024-12-24107.92104.28-1.41WMB ahead
2024-12-23106.27103.23-1.47WMB ahead
2024-12-20106.20102.16-1.40WMB ahead
2024-12-19104.63100.40-1.39WMB ahead
2024-12-18104.3599.33-1.33WMB ahead
2024-12-17107.23102.54-1.38WMB ahead
2024-12-16108.22103.07-1.36WMB ahead
2024-12-13110.32103.95-1.27WMB ahead
2024-12-12111.00105.40-1.35WMB ahead
2024-12-11111.03105.79-1.39WMB ahead
2024-12-10110.32104.18-1.33WMB ahead
2024-12-09111.24104.41-1.28WMB ahead
2024-12-06112.41108.58-1.55WMB ahead
2024-12-05112.58109.17-1.60WMB ahead
2024-12-04112.58107.52-1.48WMB ahead
2024-12-03114.12108.10-1.42WMB ahead
2024-12-02115.87107.81-1.27WMB ahead
2024-11-29117.99111.76-1.44WMB ahead
2024-11-27115.32111.04-1.61WMB ahead
2024-11-26112.61111.48-1.88WMB ahead
2024-11-25110.83111.13-2.02WMB ahead
2024-11-22112.47113.92-2.14WMB ahead
2024-11-21110.86114.09-2.33WMB ahead
2024-11-20108.94112.11-2.36WMB ahead
2024-11-19108.40111.92-2.43WMB ahead
2024-11-18107.92110.50-2.39WMB ahead
2024-11-15106.55108.00-2.32WMB ahead
2024-11-14105.59106.15-2.28WMB ahead
2024-11-13104.15106.19-2.45WMB ahead
2024-11-12104.28108.37-2.69WMB ahead
2024-11-11104.76108.67-2.73WMB ahead
2024-11-08104.25107.54-2.72WMB ahead
2024-11-07103.67105.88-2.66WMB ahead
2024-11-06102.71105.67-2.79WMB ahead
2024-11-05100.41101.32-2.63WMB ahead
2024-11-0499.8399.58-2.55WMB ahead
2024-11-0198.7798.47-2.59WMB ahead
2024-10-3198.22100.02-2.88WMB ahead
2024-10-30100.27100.25-2.72WMB ahead
2024-10-2999.7399.01-2.69WMB ahead
2024-10-2899.8699.87-2.82WMB ahead
2024-10-2599.55100.27-2.96WMB ahead
2024-10-2499.49100.50-3.06WMB ahead
2024-10-2399.2899.79-3.06WMB ahead
2024-10-2299.2199.89-3.15WMB ahead
2024-10-2199.3899.31-3.12WMB ahead
2024-10-18100.00100.00-3.21WMB ahead

One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Jan 27, 2025 (EPD -0.4%, WMB -8.4%); Jul 1, 2025 (EPD +0.5%, WMB -6.5%). Upcoming earnings: EPD Oct 29, 2026 (pre-market); WMB Nov 2, 2026 (after-hours).

Paired trades

The shared paper book and the replay, kept apart

Forward paper record

No paper position on this pair yet.

Historical simulation (a diagnostic, same rules)

3 simulated trades to Oct 20, 2026: -11.38% per trade on average after costs, 0 won.

LegsEnteredExitedWhyDaysBefore costsCosts + borrowAfter costs
Long EPD · Short WMBSep 28, 2021Dec 8, 2021divergence stop71-$1,000.82-$53.88-$1,212.77 (-12.13%)
Long EPD · Short WMBApr 27, 2020Sep 3, 2020divergence stop129-$1,338.48-$64.14-$1,611.99 (-16.12%)
Long WMB · Short EPDMar 20, 2018Apr 4, 2018divergence stop15-$568.64-$44.90-$589.20 (-5.89%)

Per $10,000 a leg. A replay on today's companies cannot prove an edge.

The companies

EPD and WMB at a glance

EPD Enterprise Products Partners L.P.

Listing
NYSE · SEC CIK 1061219
Industry
Natural Gas Distribution · SIC 4922 Natural Gas Transmission
Market value
$79.5B
Price history
2,521 daily closes, Oct 12, 2016 to Oct 22, 2026

WMB The Williams Companies Inc.

Listing
NYSE · SEC CIK 107263
Industry
Natural Gas Distribution · SIC 4922 Natural Gas Transmission
Market value
$86.1B
Price history
2,521 daily closes, Oct 12, 2016 to Oct 22, 2026

Daily prices: Nasdaq.com. Filings and industry codes: SEC EDGAR. Earnings dates: Nasdaq earnings calendar.

Related
All pairs →
PairStatusAhead nowIndustry
WMB / NGGWatchlistneitherNatural Gas Distribution
NGG / EPDWatchlistneitherSIC 4922 Natural Gas Transmission

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Paper only: hypothetical paired positions with modelled costs. No broker, no orders, no real money. A historical simulation is a diagnostic, not proof of an edge. Not investment advice.