SIC 3621 Motors & Generators

Generac Holdlings Inc. vs INNIO N.V.

Short historyGNRC / INIOPrices through Oct 22, 2026

Why these are rivals: #1 and #2 by market value ($12B vs $11B) with SEC SIC 3621 (Motors & Generators).

Less than a year of shared trading history, so no relationship can be measured yet.

Aligned sessions: 98 (needs >= 254)

Business leadership

Business size

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

Year	GNRC	INIO	Larger
2025	$4.2B	-	-
2024	$4.3B	-	-
2023	$4.0B	-	-
2022	$4.6B	-	-
2021	$3.7B	-	-
2020	$2.5B	-	-

Market value: GNRC $11.4B, INIO $12.0B.

Stock leadership

Neither is clearly ahead

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

No statistic yet.

Price change	3 mo	6 mo	12 mo
GNRC	-6.9%	-	-
INIO	-42.5%	-	-

Relationship

Not a measured twin today

Only these tests can make a pair tradable on paper.

Fail: Aligned sessions: 98 (needs >= 254)
Data: Both stocks current

The twins over two years

Prices side by side, and the gap between them

GNRC Generac Holdlings Inc. INIO INNIO N.V.Price index, 100 = 2026-06-04. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).

Spread z-score: GNRC relative to INIO, against the 252 sessions before each day. Above 0: GNRC ahead; below 0: INIO ahead. Lines at +/-2 (idea) and +/-4 (stop).

Data table (98 sessions)

Date	GNRC index	INIO index	z
2026-10-22	67.60	45.38	n/a
2026-10-21	73.04	50.66	n/a
2026-10-20	69.96	48.74	n/a
2026-10-19	69.50	48.08	n/a
2026-10-16	69.27	48.77	n/a
2026-10-15	71.33	49.55	n/a
2026-10-14	71.21	49.55	n/a
2026-10-13	77.04	54.98	n/a
2026-10-12	78.51	55.89	n/a
2026-10-09	80.87	59.43	n/a
2026-10-08	80.68	57.66	n/a
2026-10-07	79.58	61.08	n/a
2026-10-06	80.40	64.11	n/a
2026-10-05	77.37	57.00	n/a
2026-10-02	77.95	60.03	n/a
2026-10-01	74.75	54.89	n/a
2026-09-30	74.40	54.44	n/a
2026-09-29	76.30	55.20	n/a
2026-09-28	73.78	54.53	n/a
2026-09-25	74.83	57.42	n/a
2026-09-24	71.21	57.09	n/a
2026-09-23	71.70	60.03	n/a
2026-09-22	74.12	58.59	n/a
2026-09-21	73.69	60.96	n/a
2026-09-18	74.58	63.51	n/a
2026-09-17	74.51	62.94	n/a
2026-09-16	62.96	56.19	n/a
2026-09-15	62.93	53.42	n/a
2026-09-14	63.63	52.40	n/a
2026-09-11	67.23	61.11	n/a
2026-09-10	65.32	58.86	n/a
2026-09-09	67.05	62.40	n/a
2026-09-08	68.39	65.53	n/a
2026-09-04	67.36	62.37	n/a
2026-09-03	65.80	60.90	n/a
2026-09-02	64.99	60.27	n/a
2026-09-01	65.23	58.47	n/a
2026-08-31	66.65	60.66	n/a
2026-08-28	66.08	62.55	n/a
2026-08-27	70.93	67.69	n/a
2026-08-26	74.29	70.15	n/a
2026-08-25	72.55	65.95	n/a
2026-08-24	73.19	66.46	n/a
2026-08-21	74.06	69.55	n/a
2026-08-20	74.33	69.07	n/a
2026-08-19	75.79	75.74	n/a
2026-08-18	76.06	78.08	n/a
2026-08-17	79.55	84.44	n/a
2026-08-14	78.85	82.37	n/a
2026-08-13	77.90	82.82	n/a
2026-08-12	79.78	84.80	n/a
2026-08-11	77.61	82.43	n/a
2026-08-10	74.10	81.47	n/a
2026-08-07	76.30	82.13	n/a
2026-08-06	75.93	77.99	n/a
2026-08-05	78.17	78.41	n/a
2026-08-04	78.60	82.13	n/a
2026-08-03	72.34	74.80	n/a
2026-07-31	70.87	73.33	n/a
2026-07-30	69.00	73.24	n/a
2026-07-29	70.18	65.38	n/a
2026-07-28	70.32	78.74	n/a
2026-07-27	71.02	80.84	n/a
2026-07-24	72.63	78.92	n/a
2026-07-23	75.68	84.05	n/a
2026-07-22	76.73	82.39	n/a
2026-07-21	77.52	91.20	n/a
2026-07-20	76.67	82.49	n/a
2026-07-17	77.27	83.24	n/a
2026-07-16	77.44	84.14	n/a
2026-07-15	81.46	90.57	n/a
2026-07-14	80.94	92.52	n/a
2026-07-13	81.60	94.83	n/a
2026-07-10	84.11	100.33	n/a
2026-07-09	84.80	101.29	n/a
2026-07-08	85.07	100.72	n/a
2026-07-07	84.78	103.75	n/a
2026-07-06	92.69	108.62	n/a
2026-07-02	90.84	110.96	n/a
2026-07-01	97.15	114.50	n/a
2026-06-30	105.27	118.77	n/a
2026-06-29	102.04	115.08	n/a
2026-06-26	100.17	111.98	n/a
2026-06-25	106.12	114.83	n/a
2026-06-24	102.16	109.55	n/a
2026-06-23	98.71	115.05	n/a
2026-06-22	106.26	123.51	n/a
2026-06-18	100.36	112.46	n/a
2026-06-17	96.43	105.17	n/a
2026-06-16	95.51	102.82	n/a
2026-06-15	97.11	104.26	n/a
2026-06-12	94.33	97.21	n/a
2026-06-11	92.52	100.18	n/a
2026-06-10	85.97	94.38	n/a
2026-06-09	93.83	101.26	n/a
2026-06-08	95.60	101.26	n/a
2026-06-05	94.03	96.76	n/a
2026-06-04	100.00	100.00	n/a

No one-day company-specific move of 4+ standard deviations in this window. Upcoming earnings: INIO Oct 27, 2026 (pre-market); GNRC Oct 28, 2026 (pre-market).

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)

No simulated trade through Oct 20, 2026: the pair rarely passed every test while 2 standard deviations apart.

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

The companies

GNRC and INIO at a glance

GNRC Generac Holdlings Inc.

Listing: NYSE · SEC CIK 1474735
Industry: Metal Fabrications · SIC 3621 Motors & Generators
Market value: $11.4B
Price history: 2,521 daily closes, Oct 12, 2016 to Oct 22, 2026

INIO INNIO N.V.

Listing: Nasdaq · SEC CIK 2109150
Industry: Metal Fabrications · SIC 3621 Motors & Generators
Market value: $12.0B
Price history: 98 daily closes, Jun 4, 2026 to Oct 22, 2026

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

Follow the research behind the paper book

Boostio is a research-first platform in private beta: crypto candidates, daily market stories, public paper trading and now rival stocks. Exploring these pages stays free and open.

Explore the private beta

Scout Market Pulse Narratives Digest Wave

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.