PENUMBRA INC (PEN) Institutional Shareholders
PENUMBRA INC (PEN) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $10.60B in PEN holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of PEN tracked by InsiderSet, reporting ownership valued at approximately $1.36B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.37B, representing an estimated gain of +0.99% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 47% of the total disclosed PEN value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Hbk Investments L P, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in PENUMBRA INC (PEN).
This page ranks the largest institutional PEN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
437
Total Reported Value
$10.60B
Largest Holder
Blackrock, Inc.
Largest Position
$1.36B
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
33
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.02% | 4,297,555 | $1,356,952,992 | $1,370,361,363 | +$13,408,371 | +0.99% | |
| Hbk Investments L P | 6.75% | 1,838,508 | $580,508,901 | $586,245,046 | +$5,736,145 | +0.99% | |
| Vanguard Capital Management Llc | 0.01% | 1,709,877 | $539,893,663 | $545,228,479 | +$5,334,816 | +0.99% | |
| Vanguard Portfolio Management Llc | 0.02% | 1,667,276 | $526,442,397 | $531,644,298 | +$5,201,901 | +0.99% | |
| State Street Corp | 0.01% | 1,243,258 | $392,556,505 | $396,437,678 | +$3,881,173 | +0.99% | |
| Exoduspoint Capital Management, Lp | 3.19% | 1,090,430 | $344,303,272 | $347,705,414 | +$3,402,142 | +0.99% | |
| Balyasny Asset Management L.P. | 0.63% | 1,090,163 | $344,218,967 | $347,620,276 | +$3,401,309 | +0.99% | |
| Jpmorgan Chase & Co | 0.02% | 1,071,454 | $338,557,982 | $341,654,537 | +$3,096,555 | +0.91% | |
| Goldman Sachs Group Inc | 0.03% | 847,104 | $267,473,088 | $270,116,052 | +$2,642,964 | +0.99% | |
| Arrowstreet Capital, Limited Partnership | 0.12% | 834,903 | $263,620,622 | $266,225,520 | +$2,604,898 | +0.99% | |
| Geode Capital Management, Llc | 0.01% | 796,471 | $251,546,090 | $253,970,708 | +$2,424,618 | +0.96% | |
| Norges Bank | 0.02% | 752,242 | $237,520,412 | $239,867,407 | +$2,346,995 | +0.99% | |
| Ubs Group Ag | 0.04% | 703,822 | $222,231,798 | $224,427,721 | +$2,195,923 | +0.99% | |
| Millennium Management Llc | 0.15% | 700,611 | $221,217,923 | $223,403,830 | +$2,185,907 | +0.99% | |
| Morgan Stanley | 0.01% | 591,824 | $186,869,151 | $188,714,919 | +$1,845,768 | +0.99% | |
| Aqr Arbitrage Llc | 2.54% | 563,873 | $178,042,900 | $179,802,184 | +$1,759,284 | +0.99% | |
| Capital World Investors | 0.02% | 479,701 | $151,465,591 | $152,962,258 | +$1,496,667 | +0.99% | |
| Citadel Advisors Llc | 0.08% | 448,763 | $141,696,917 | $143,097,058 | +$1,400,141 | +0.99% | |
| Neuberger Berman Group Llc | 0.09% | 438,553 | $138,473,110 | $139,841,395 | +$1,368,285 | +0.99% | |
| Citigroup Inc | 0.06% | 433,125 | $136,759,219 | $138,110,569 | +$1,351,350 | +0.99% | |
| Two Sigma Investments, Lp | 0.10% | 428,128 | $135,181,416 | $136,517,175 | +$1,335,759 | +0.99% | |
| Tudor Investment Corp Et Al | 0.52% | 400,649 | $126,504,922 | $127,754,947 | +$1,250,025 | +0.99% | |
| Charles Schwab Investment Management Inc | 0.01% | 343,713 | $108,527,380 | $109,599,764 | +$1,072,384 | +0.99% | |
| Northern Trust Corp | 0.01% | 333,064 | $105,164,958 | $106,204,118 | +$1,039,160 | +0.99% | |
| Dimensional Fund Advisors Lp | 0.02% | 326,120 | $102,972,179 | $103,989,884 | +$1,017,705 | +0.99% | |
| Alliancebernstein L.P. | 0.03% | 301,585 | $99,031,466 | $96,166,409 | -$2,865,057 | -2.89% | |
| Bank Of America Corp | 0.01% | 266,017 | $83,994,867 | $84,824,841 | +$829,974 | +0.99% | |
| Invesco Ltd. | 0.01% | 263,980 | $83,351,684 | $84,175,303 | +$823,619 | +0.99% | |
| Magnetar Financial Llc | 0.74% | 255,841 | $80,781,796 | $81,580,020 | +$798,224 | +0.99% | |
| Vanguard Fiduciary Trust Co | 0.02% | 251,746 | $79,488,800 | $80,274,247 | +$785,447 | +0.99% | |
| Bank Of New York Mellon Corp | 0.01% | 235,328 | $74,304,811 | $75,039,039 | +$734,228 | +0.99% | |
| Champlain Investment Partners, Llc | 1.78% | 219,032 | $69,159,354 | $69,842,734 | +$683,380 | +0.99% | |
| Tig Advisors, Llc | 3.12% | 215,082 | $67,912,141 | $68,583,197 | +$671,056 | +0.99% | |
| Lmr Partners Llp | 0.50% | 213,893 | $67,536,715 | $68,204,061 | +$667,346 | +0.99% | |
| Fmr Llc | 0.00% | 211,002 | $66,623,786 | $67,282,208 | +$658,422 | +0.99% | |
| Hudson Bay Capital Management Lp | 0.33% | 203,138 | $64,140,823 | $64,774,614 | +$633,791 | +0.99% | |
| D. E. Shaw & Co., Inc. | 0.04% | 197,329 | $62,306,632 | $62,922,298 | +$615,666 | +0.99% | |
| Alpine Associates Management Inc. | 3.73% | 188,986 | $59,672,330 | $60,261,966 | +$589,636 | +0.99% | |
| Melqart Asset Management (Uk) Ltd | 5.58% | 185,734 | $58,645,511 | $59,225,001 | +$579,490 | +0.99% | |
| Caxton Associates Llp | 1.06% | 179,384 | $56,640,498 | $57,200,176 | +$559,678 | +0.99% | |
| Adage Capital Partners Gp, L.L.C. | 0.08% | 176,720 | $55,799,340 | $56,350,706 | +$551,366 | +0.99% | |
| Janus Henderson Group Plc | 0.03% | 167,054 | $54,849,328 | $53,268,509 | -$1,580,819 | -2.88% | |
| Birnam Oak Advisors, Lp | 8.84% | 171,277 | $54,080,713 | $54,615,097 | +$534,384 | +0.99% | |
| Glazer Capital, Llc | 1.23% | 158,127 | $49,929,000 | $50,421,956 | +$492,956 | +0.99% | |
| Westchester Capital Management, Llc | 2.50% | 157,472 | $49,721,784 | $50,213,097 | +$491,313 | +0.99% | |
| Water Island Capital Llc | 5.03% | 150,456 | $47,506,483 | $47,975,905 | +$469,422 | +0.99% | |
| Woodline Partners Lp | 0.14% | 145,844 | $46,050,243 | $46,505,276 | +$455,033 | +0.99% | |
| Verition Fund Management Llc | 0.32% | 142,309 | $44,934,067 | $45,378,071 | +$444,004 | +0.99% | |
| Decagon Asset Management Llp | 8.95% | 142,001 | $44,836,816 | $45,279,859 | +$443,043 | +0.99% | |
| Squarepoint Ops Llc | 0.08% | 138,413 | $43,703,905 | $44,135,753 | +$431,848 | +0.99% |
Frequently asked questions about PEN
Who owns the most PEN stock?
The largest holders of PEN are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for PENUMBRA INC (PEN).
Is PEN widely held by superinvestors?
Many widely followed stocks like PEN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly PEN is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.