D. E. Shaw & Co., Inc.

CIK

1009207

City

New York

State / Country

Stock

PEN — Penumbra Inc

Top Portfolio Positions

2,765 positions · $152,679,076,469 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
NVDA	Nvidia Corp Technology	22,002,115	$3,837,168,854	2.51%
MSFT	Microsoft Corp Technology	8,119,370	$3,005,547,192	1.97%
TSLA	Tesla, Inc. Consumer Cyclical	7,308,193	$2,716,820,747	1.78%
GOOGL	Alphabet Inc. Communication Services	9,392,969	$2,701,042,165	1.77%
AVGO	Broadcom Inc. Technology	7,833,108	$2,424,425,255	1.59%
AAPL	Apple Inc. Technology	9,246,586	$2,346,691,059	1.54%
MU	Micron Technology Inc Technology	5,815,376	$1,964,666,627	1.29%
META	Meta Platforms, Inc. Communication Services	3,417,924	$1,955,496,857	1.28%
AMZN	Amazon Com Inc Consumer Cyclical	8,037,824	$1,674,037,603	1.10%
BSX	Boston Scientific Corp Healthcare	24,432,352	$1,533,130,087	1.00%

Portfolio Trend

25 quarters · across all stocks

Holdings in PEN

Compact Export CSV

Shares Held

Position Value (USD)

48 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$66,314,320	201,950	+2584.1%	Shares	Defined	2026-05-15
2025-12-31	$2,339,286	7,524	-0.8%	Shares	Defined	2026-02-17
2025-09-30	$1,921,685	7,586	-33.5%	Shares	Defined	2025-11-14
2025-09-30	$2,887,848	11,400	0.0%	Call	Defined	2025-11-14
2025-06-30	$2,925,582	11,400	+50.3%	Call	Defined	2025-08-14
2025-06-30	$1,946,794	7,586	-33.5%	Shares	Defined	2025-08-14
2025-03-31	$3,048,474	11,400	+50.3%	Call	Defined	2025-05-15
2025-03-31	$2,028,572	7,586	+11.2%	Shares	Defined	2025-05-15
2024-12-31	$1,620,088	6,822	+387.3%	Shares	Defined	2025-02-14
2024-12-31	$332,472	1,400	-95.6%	Call	Defined	2025-02-14
2024-09-30	$6,179,058	31,800	+268.9%	Put	Defined	2024-11-14
2024-09-30	$1,674,952	8,620	-34.7%	Shares	Defined	2024-11-14
2024-09-30	$2,564,892	13,200	+54.1%	Call	Defined	2024-11-14
2024-06-30	$1,541,802	8,567	-74.5%	Shares	Defined	2024-08-14
2024-06-30	$6,046,992	33,600	+184.7%	Put	Defined	2024-08-14
2024-06-30	$2,123,646	11,800	+656.9%	Call	Defined	2024-08-14
2024-03-31	$347,937	1,559	-96.7%	Shares	Defined	2024-05-15
2024-03-31	$10,578,732	47,400	+54.4%	Call	Defined	2024-05-15
2024-03-31	$6,851,626	30,700	-54.5%	Put	Defined	2024-05-15
2023-12-31	$16,953,796	67,400	+119.5%	Call	Defined	2024-02-14
2023-12-31	$7,722,278	30,700	-68.9%	Put	Defined	2024-02-14
2023-09-30	$23,900,708	98,800	+377.3%	Call	Defined	2023-11-14
2023-09-30	$5,007,537	20,700	+1970.0%	Put	Defined	2023-11-14
2023-09-30	$241,910	1,000	-94.0%	Shares	Defined	2023-11-14
2023-06-30	$5,703,826	16,578	-78.5%	Shares	Defined	2023-08-14
2023-06-30	$26,561,432	77,200	+208.8%	Call	Defined	2023-08-14
2023-03-31	$6,967,250	25,000	-51.4%	Put	Defined	2023-05-15
2023-03-31	$14,324,666	51,400	+414.0%	Call	Defined	2023-05-15
2022-12-31	$2,224,600	10,000	-60.0%	Call	Defined	2023-02-14
2022-12-31	$5,561,500	25,000	-20.1%	Put	Defined	2023-02-14
2022-09-30	$5,934,480	31,300	+396.4%	Put	Defined	2022-11-14
2022-09-30	$1,195,617	6,306	-36.3%	Shares	Defined	2022-11-14
2022-06-30	$1,232,748	9,900	+5.3%	Put	Defined	2022-08-15
2022-03-31	$2,088,022	9,400	+459.9%	Put	Defined	2022-05-16
2022-03-31	$372,956	1,679	-19.2%	Shares	Defined	2022-05-16
2021-12-31	$597,050	2,078	-79.2%	Shares	Defined	2022-02-14
2021-12-31	$2,873,200	10,000	-50.0%	Put	Defined	2022-02-14
2021-09-30	$5,330,000	20,000	+100.0%	Put	Defined	2021-11-15
2021-09-30	$2,665,000	10,000	+106.6%	Call	Defined	2021-11-15
2021-09-30	$1,289,860	4,840	-75.8%	Shares	Defined	2021-11-15
2021-06-30	$5,481,200	20,000	-69.5%	Put	Defined	2021-08-16
2021-06-30	$17,978,336	65,600	0.0%	Call	Defined	2021-08-16
2021-03-31	$17,750,048	65,600	+556.0%	Call	Defined	2021-05-17
2020-12-31	$1,750,000	10,000	0.0%	Call	Defined	2021-02-16
2020-09-30	$1,943,800	10,000	+35.7%	Put	Defined	2020-11-16
2020-09-30	$1,432,774	7,371	-26.3%	Shares	Defined	2020-11-16
2020-06-30	$1,788,200	10,000	0.0%	Put	Defined	2020-08-14
2020-03-31	$1,613,300	10,000	—	Put	Defined	2020-05-15
No 13F history on record for this holder in this stock.