JANE STREET GROUP, LLC

Position in AMSC — American Superconductor Corp /De/

CIK 1595888 NEW YORK, NY

Back to AMSC Full portfolio

Position in AMSC

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$7,069,940

+$7,069,940 QoQ

Shares Held

170,319

Ownership

0.352%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#40

of 276 holders

Holding Since

Dec 2020

19 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in AMSC Over Time

Shares Held

Position Value (USD)

Derivatives in AMSC

reported options exposure · as of Jun 30, 2026

CallValue

$17,450,804

CallShares

420,400

PutValue

$15,503,985

PutShares

373,500

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Specialty Industrial Machinery

Industrials · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $1,066,894,968 across 53 Specialty Industrial Machinery names. AMSC ranks #16 (0.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CMI	Cummins Inc	254,761	$181,698,092
2	GNRC	Generac Holdings Inc.	601,012	$175,982,323
3	GEV	GE Vernova Inc.	136,446	$160,304,946
4	IEX	Idex Corp /De/	411,838	$93,466,633
5	DOV	DOVER Corp	397,578	$89,168,793
6	INIO	Innio N.V.	1,885,532	$74,572,789
7	XE	X-Energy, Inc.	3,855,908	$70,794,470
8	NPO	Enpro Inc.	108,125	$40,755,555

All Filings in AMSC

Export CSV

40 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$7,069,940	170,319	-29.8%	Shares	Defined	2026-08-14
2026-06-30	$17,450,804	420,400	+754.5%	Call	Defined	2026-08-14
2026-06-30	$15,503,985	373,500	+173.8%	Put	Defined	2026-08-14
2026-03-31	$1,665,420	49,200	-49.1%	Call	Defined	2026-05-12
2026-03-31	$4,617,140	136,400	+293.1%	Put	Defined	2026-05-12
2025-12-31	$2,783,026	96,700	+16.9%	Call	Defined	2026-02-12
2025-12-31	$6,986,833	242,767	+78.4%	Shares	Defined	2026-02-12
2025-12-31	$998,666	34,700	-56.4%	Put	Defined	2026-02-12
2025-09-30	$8,083,097	136,102	-17.1%	Shares	Defined	2025-11-14
2025-09-30	$4,727,444	79,600	-77.5%	Put	Defined	2025-11-14
2025-09-30	$4,911,553	82,700	+20.9%	Call	Defined	2025-11-14
2025-06-30	$6,021,011	164,105	+35.0%	Shares	Defined	2025-08-14
2025-06-30	$2,509,596	68,400	+40.2%	Call	Defined	2025-08-14
2025-06-30	$12,995,598	354,200	+941.8%	Put	Defined	2025-08-14
2025-03-31	$616,760	34,000	-72.4%	Put	Defined	2025-05-19
2025-03-31	$885,232	48,800	-40.8%	Call	Defined	2025-05-19
2025-03-31	$2,204,716	121,539	+314.2%	Shares	Defined	2025-05-19
2024-12-31	$3,031,953	123,100	+28.2%	Put	Defined	2025-02-14
2024-12-31	$2,029,512	82,400	+13.5%	Call	Defined	2025-02-14
2024-12-31	$722,692	29,342	+57.0%	Shares	Defined	2025-02-14
2024-09-30	$441,012	18,687	-72.5%	Shares	Defined	2024-11-15
2024-09-30	$2,265,600	96,000	-30.9%	Put	Defined	2024-11-15
2024-09-30	$1,713,360	72,600	+188.1%	Call	Defined	2024-11-15
2024-06-30	$1,592,157	68,070	-80.9%	Shares	Defined	2024-08-15
2024-03-31	$4,815,949	356,473	+67.0%	Shares	Defined	2024-05-16
2023-12-31	$2,378,377	213,499	+1258.2%	Shares	Defined	2024-02-15
2023-06-30	$98,400	15,719	-70.9%	Shares	Defined	2023-08-14
2023-03-31	$265,503	54,074	+54.3%	Shares	Defined	2023-05-16
2022-12-31	$128,954	35,042	-38.5%	Shares	Defined	2023-02-15
2022-06-30	$295,140	56,977	+129.5%	Shares	Defined	2022-08-16
2021-09-30	$367,416	25,200	-59.7%	Call	Defined	2021-11-16
2021-06-30	$1,088,614	62,600	-11.2%	Call	Defined	2021-08-16
2021-06-30	$431,706	24,825	-70.2%	Shares	Defined	2021-08-16
2021-06-30	$2,415,471	138,900	-5.4%	Put	Defined	2021-08-16
2021-03-31	$1,336,680	70,500	+69.5%	Call	Defined	2021-05-18
2021-03-31	$1,581,301	83,402	+274.2%	Shares	Defined	2021-05-18
2021-03-31	$2,783,328	146,800	+31.0%	Put	Defined	2021-05-18
2020-12-31	$522,031	22,290	—	Shares	Defined	2021-02-17
2020-12-31	$2,625,382	112,100	—	Put	Defined	2021-02-17
2020-12-31	$974,272	41,600	—	Call	Defined	2021-02-17
No filing history on record for this holder in this stock.