JANE STREET GROUP, LLC

CIK

1595888

City

NEW YORK

State / Country

Stock

UCTT — Ultra Clean Holdings, Inc.

Top Portfolio Positions

3,967 positions · $676,662,655,548 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
SPY	Spdr S&P 500 ETF Trust	199,908,899	$130,008,753,375	19.21%
QQQ	Invesco Qqq Trust, Series 1	72,961,946	$42,112,175,991	6.22%
TSLA	Tesla, Inc. Consumer Cyclical	96,307,904	$35,802,463,311	5.29%
NVDA	Nvidia Corp Technology	186,634,816	$32,549,111,909	4.81%
GLD	Spdr Gold Trust	75,600,043	$32,529,942,501	4.81%
META	Meta Platforms, Inc. Communication Services	35,584,342	$20,358,869,587	3.01%
MU	Micron Technology Inc Technology	44,692,337	$15,098,859,131	2.23%
MSFT	Microsoft Corp Technology	39,450,469	$14,603,380,108	2.16%
AMZN	Amazon Com Inc Consumer Cyclical	67,664,445	$14,092,473,959	2.08%
AAPL	Apple Inc. Technology	49,649,392	$12,600,519,193	1.86%

Portfolio Trend

25 quarters · across all stocks

Holdings in UCTT

Compact Export CSV

Shares Held

Position Value (USD)

34 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,282,006	36,700	-88.1%	Put	Defined	2026-05-12
2026-03-31	$19,257,332	309,703	+464.1%	Shares	Defined	2026-05-12
2026-03-31	$3,413,682	54,900	-45.9%	Call	Defined	2026-05-12
2025-12-31	$2,572,361	101,554	+831.7%	Shares	Defined	2026-02-12
2025-12-31	$276,097	10,900	+1.9%	Call	Defined	2026-02-12
2025-09-30	$291,575	10,700	-84.9%	Put	Defined	2025-11-14
2025-09-30	$1,931,506	70,881	+283.1%	Shares	Defined	2025-11-14
2025-09-30	$504,125	18,500	-89.7%	Call	Defined	2025-11-14
2025-06-30	$4,034,250	178,744	+20.6%	Shares	Defined	2025-08-14
2025-03-31	$3,173,260	148,214	+1987.5%	Shares	Defined	2025-05-19
2024-12-31	$255,245	7,100	-92.8%	Call	Defined	2025-02-14
2024-09-30	$3,931,466	98,459	+143.6%	Shares	Defined	2024-11-15
2024-06-30	$1,980,825	40,425	+586.0%	Shares	Defined	2024-08-15
2024-03-31	$270,723	5,893	-39.2%	Shares	Defined	2024-05-16
2023-12-31	$331,122	9,699	-39.3%	Shares	Defined	2024-02-15
2023-06-30	$614,359	15,974	+85.5%	Shares	Defined	2023-08-14
2023-03-31	$285,573	8,612	-60.6%	Shares	Defined	2023-05-16
2022-12-31	$723,896	21,837	+26.2%	Shares	Defined	2023-02-15
2022-09-30	$445,526	17,302	-15.1%	Shares	Defined	2022-11-15
2022-06-30	$607,010	20,390	-44.6%	Shares	Defined	2022-08-16
2022-03-31	$1,559,952	36,800	+185.5%	Put	Defined	2022-05-17
2022-03-31	$546,449	12,891	-69.7%	Shares	Defined	2022-05-17
2022-03-31	$1,801,575	42,500	+9.8%	Call	Defined	2022-05-17
2021-12-31	$2,219,832	38,700	+114.0%	Call	Defined	2022-02-15
2021-12-31	$1,037,527	18,088	-56.8%	Shares	Defined	2022-02-15
2021-12-31	$2,403,384	41,900	+21.4%	Put	Defined	2022-02-15
2021-09-30	$1,469,700	34,500	+10.6%	Call	Defined	2021-11-16
2021-09-30	$1,329,077	31,199	+4.0%	Shares	Defined	2021-11-16
2021-09-30	$1,278,000	30,000	-13.8%	Put	Defined	2021-11-16
2021-06-30	$1,869,025	34,792	+26.5%	Shares	Defined	2021-08-16
2021-06-30	$1,477,300	27,500	+10.4%	Call	Defined	2021-08-16
2021-06-30	$1,337,628	24,900	-29.8%	Put	Defined	2021-08-16
2021-03-31	$2,059,955	35,492	+329.5%	Shares	Defined	2021-05-18
2020-12-31	$257,392	8,263	—	Shares	Defined	2021-02-17
No 13F history on record for this holder in this stock.