Company · Ownership research

Penumbra Inc PEN

CIK 0001321732 · CUSIP 70975L107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 70975L107 (PEN), not CUSIP 70975L907 (PEN), and does not merge CUSIPs.

This page lists the top 20 of 344 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	FMR LLC CIK 315066 · View history	$1.30B 5,805,506 shares	0.09%	+16.05K(+0.30%)Added	SEC filing ↗ May 13, 2024	▾
02	BlackRock Inc. CIK 1364742 · View history	$906.39M 4,061,245 shares	0.02%	+60.88K(+1.50%)Added	SEC filing ↗ May 10, 2024	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$823.68M 3,690,660 shares	0.02%	+32.56K(+0.90%)Added	SEC filing ↗ May 10, 2024	▾
04	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$675.30M 3,025,823 shares	0.08%	-78.77K(-2.50%)Reduced	SEC filing ↗ May 15, 2024	▾
05	STATE STREET CORP CIK 93751 · View history	$268.78M 1,204,327 shares	0.01%	+103.22K(+9.40%)Added	SEC filing ↗ May 15, 2024	▾
06	Capital Research Global Investors CIK 1422848 · View history	$252.39M 1,130,866 shares	0.06%	-1.55M(-57.80%)Reduced	SEC filing ↗ May 14, 2024	▾
07	Champlain Investment Partners, LLC CIK 1315478 · View history	$242.06M 1,084,595 shares	1.39%	+616.70K(+131.80%)Added	SEC filing ↗ May 13, 2024	▾
08	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history	$186.07M 833,703 shares	0.48%	+90.44K(+12.20%)Added	SEC filing ↗ May 8, 2024	▾
09	Clearbridge Investments, LLC CIK 1348883 · View history	$175.49M 786,336 shares	0.14%	-14.49K(-1.80%)Reduced	SEC filing ↗ May 13, 2024	▾
10	RTW INVESTMENTS, LP CIK 1493215 · View history	$150.84M 675,888 shares	2.23%	+13.22K(+2.00%)Added	SEC filing ↗ May 15, 2024	▾
11	BAILLIE GIFFORD & CO CIK 1088875 · View history	$141.57M 634,319 shares	0.11%	-13.63K(-2.10%)Reduced	SEC filing ↗ May 1, 2024	▾
12	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$137.47M 615,849 shares	0.01%	+23.88K(+4.00%)Added	SEC filing ↗ May 13, 2024	▾
13	Capital World Investors CIK 1422849 · View history	$121.25M 543,274 shares	0.02%	0(0.00%)Unchanged	SEC filing ↗ May 14, 2024	▾
14	Rock Springs Capital Management LP CIK 1595725 · View history	$112.71M 505,000 shares	2.86%	-32.50K(-6.00%)Reduced	SEC filing ↗ May 15, 2024	▾
15	MORGAN STANLEY CIK 895421 · Amended · View history	$86.83M 389,056 shares	0.01%	+24.03K(+6.60%)Added	SEC filing ↗ Oct 17, 2024	▾
16	EAGLE ASSET MANAGEMENT INC CIK 790502 · View history	$75.12M 345,551 shares	0.38%	-4.52K(-1.30%)Reduced	SEC filing ↗ May 9, 2024	▾
17	Bank of New York Mellon Corp CIK 1390777 · View history	$71.98M 322,498 shares	0.01%	-14.42K(-4.30%)Reduced	SEC filing ↗ Apr 25, 2024	▾
18	BRAIDWELL LP CIK 1920938 · View history	$66.04M 295,892 shares	2.13%	+73.10K(+32.80%)Added	SEC filing ↗ May 15, 2024	▾
19	NORGES BANK CIK 1374170 · Amended · View history	$65.25M 292,368 shares	0.01%	-46.43K(-13.70%)Reduced	SEC filing ↗ May 14, 2024	▾
20	FRANKLIN RESOURCES INC CIK 38777 · View history	$59.29M 265,666 shares	0.02%	+39.48K(+17.50%)Added	SEC filing ↗ May 13, 2024	▾

Showing 20 / 344 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

344

Cancelled or null records excluded

Disclosed shares

33,719,298

Not deduplicated across managers

Disclosed value

$7.52B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Penumbra Inc · Q1 2024

Explore all 344 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.