JANE STREET GROUP, LLC

CIK

1595888

City

NEW YORK

State / Country

Stock

MKSI — Mks 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 MKSI

Compact Export CSV

Shares Held

Position Value (USD)

48 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$55,901,971	243,253	-55.0%	Shares	Defined	2026-05-12
2026-03-31	$124,143,362	540,200	+4597.4%	Call	Defined	2026-05-12
2026-03-31	$2,642,815	11,500	-11.5%	Put	Defined	2026-05-12
2025-12-31	$2,077,400	13,000	-96.6%	Put	Defined	2026-02-12
2025-12-31	$61,221,776	383,115	-29.0%	Shares	Defined	2026-02-12
2025-12-31	$86,180,140	539,300	+6814.1%	Call	Defined	2026-02-12
2025-09-30	$965,406	7,800	-98.6%	Put	Defined	2025-11-14
2025-09-30	$66,996,701	541,300	+311.2%	Call	Defined	2025-11-14
2025-09-30	$16,293,328	131,642	+1165.8%	Shares	Defined	2025-11-14
2025-06-30	$1,033,344	10,400	+41.2%	Put	Defined	2025-08-14
2025-06-30	$731,985	7,367	-98.6%	Shares	Defined	2025-08-14
2025-06-30	$52,799,904	531,400	+14661.1%	Call	Defined	2025-08-14
2025-03-31	$288,540	3,600	-96.5%	Put	Defined	2025-05-19
2025-03-31	$8,261,059	103,070	-80.3%	Shares	Defined	2025-05-19
2025-03-31	$41,942,495	523,300	+26065.0%	Call	Defined	2025-05-19
2024-12-31	$208,780	2,000	-99.6%	Put	Defined	2025-02-14
2024-12-31	$54,731,677	524,300	+188.8%	Call	Defined	2025-02-14
2024-12-31	$18,953,255	181,562	-42.6%	Shares	Defined	2025-02-14
2024-09-30	$34,371,709	316,178	-39.6%	Shares	Defined	2024-11-15
2024-09-30	$56,931,427	523,700	+187.2%	Call	Defined	2024-11-15
2024-06-30	$23,810,086	182,341	+147.0%	Shares	Defined	2024-08-15
2024-03-31	$9,819,656	73,832	-41.2%	Shares	Defined	2024-05-16
2023-12-31	$12,908,228	125,481	+238.2%	Shares	Defined	2024-02-15
2023-09-30	$3,210,460	37,098	+230.0%	Shares	Defined	2023-11-15
2023-06-30	$1,215,259	11,242	-70.6%	Shares	Defined	2023-08-14
2023-03-31	$3,391,044	38,265	+119.3%	Shares	Defined	2023-05-16
2022-12-31	$1,478,707	17,452	-41.7%	Shares	Defined	2023-02-15
2022-09-30	$2,472,422	29,918	+28.5%	Shares	Defined	2022-11-15
2022-06-30	$2,389,431	23,282	+75.1%	Shares	Defined	2022-08-16
2022-03-31	$1,995,000	13,300	-72.5%	Call	Defined	2022-05-17
2022-03-31	$7,245,000	48,300	+2732.8%	Put	Defined	2022-05-17
2021-09-30	$257,301	1,705	-88.9%	Shares	Defined	2021-11-16
2021-09-30	$2,308,923	15,300	+106.8%	Call	Defined	2021-11-16
2021-09-30	$1,116,734	7,400	-73.0%	Put	Defined	2021-11-16
2021-06-30	$4,875,830	27,400	+285.9%	Call	Defined	2021-08-16
2021-06-30	$1,263,445	7,100	+14.5%	Put	Defined	2021-08-16
2021-03-31	$1,149,604	6,200	-63.3%	Put	Defined	2021-05-18
2021-03-31	$3,133,783	16,901	-1.2%	Shares	Defined	2021-05-18
2021-03-31	$3,170,682	17,100	+638.0%	Call	Defined	2021-05-18
2020-12-31	$348,592	2,317	-77.9%	Shares	Defined	2021-02-17
2020-12-31	$1,579,725	10,500	-53.7%	Call	Defined	2021-02-17
2020-12-31	$3,415,215	22,700	+94.0%	Put	Defined	2021-02-17
2020-09-30	$1,277,991	11,700	+388.7%	Call	Defined	2020-11-17
2020-09-30	$261,496	2,394	-83.7%	Shares	Defined	2020-11-17
2020-06-30	$1,664,628	14,700	+406.9%	Put	Defined	2020-08-17
2020-06-30	$328,396	2,900	-28.5%	Call	Defined	2020-08-17
2020-06-30	$459,301	4,056	-78.5%	Shares	Defined	2020-08-17
2020-03-31	$1,533,622	18,829	—	Shares	Defined	2020-05-15
No 13F history on record for this holder in this stock.