Penumbra Inc hedge fund holdings
PENNYSE$317.55-0.45 (-0.14%)as of Oct 2, 2026
Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.
Price vs funds buying and selling
PEN · close · 13FReported Aug 14, 2026Price vs funds buying and selling data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+25.3%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.Price and fund activity data
| Quarter | Funds buying | Funds selling | Bought | Sold | Filers | Reported |
|---|---|---|---|---|---|---|
| Q2 2025 | 187 | 138 | $1.03B | $854M | 417 | Aug 14, 2025 |
| Q3 2025 | 129 | 169 | $989M | $605M | 394 | Nov 14, 2025 |
| Q4 2025 | 136 | 151 | $1.09B | $1.15B | 408 | Feb 14, 2026 |
| Q1 2026 | 198 | 173 | $3.46B | $4.82B | 459 | May 15, 2026 |
| Q2 2026 | 143 | 174 | $1.7B | $1.64B | 425 | Aug 14, 2026 |
Quarterly action breakdown
Q2 2026
425 filersNew position
35$65.1M+206K sh
Increased
108$1.63B+5.16M sh
Reduced
121-$1.13B-3.59M sh
Out / sold
53-$508M-1.61M sh
Last 4 quarters · free
Reported Aug 14, 2026
| Fund | Action | Change in dollar | Value | % of portfolio | Reported |
|---|---|---|---|---|---|
| Baillie Gifford & Co | Sell 100% | -$276M | $0 | 0.00% | Aug 6, 2026 |
| Congress Asset Management Co | Reduce 96.16% | -$96.3M | $3.85M | 0.02% | Jul 7, 2026 |
| Champlain Investment Partners, LLC | Reduce 55.43% | -$86M | $69.2M | 1.78% | Aug 12, 2026 |
| Soros Fund Management LLC | Sell 100% | -$66.8M | $0 | 0.00% | Aug 14, 2026 |
| HBK Investments L P | Added 12.50% | +$64.5M | $581M | 5.67% | Aug 14, 2026 |
| Thrivent Financial for Lutherans | Reduce 95.36% | -$56.6M | $2.76M | 0.00% | Aug 14, 2026 |
| Westfield Capital Management Co LP | New Buy | +$41.5M | $41.5M | 0.14% | Aug 12, 2026 |
| Braidwell LP | Sell 100% | -$34.6M | $0 | 0.00% | Aug 14, 2026 |
| Melqart Asset Management (UK) Ltd | Added 127.00% | +$32.8M | $58.6M | 5.58% | Aug 14, 2026 |
| Sand Grove Capital Management LLP | Sell 100% | -$28.5M | $0 | 0.00% | Aug 14, 2026 |
| Westchester Capital Management, LLC | Added 105.50% | +$25.5M | $49.7M | 2.43% | Aug 14, 2026 |
| PFM Health Sciences, LP | Reduce 56.92% | -$25.1M | $19M | 1.63% | Aug 14, 2026 |
| Birnam Oak Advisors, LP | Added 78.43% | +$23.8M | $54.1M | 8.78% | Aug 14, 2026 |
| NZS Capital, LLC | Sell 100% | -$22.7M | $0 | 0.00% | Aug 14, 2026 |
| Alpine Associates Management Inc. | Added 43.23% | +$18M | $59.7M | 3.74% | Aug 6, 2026 |
| Capitolis Liquid Global Markets LLC | Reduce 38.07% | -$16.8M | $27.3M | 0.12% | Aug 13, 2026 |
| Nearwater Capital Markets, Ltd | Sell 100% | -$16.4M | $0 | 0.00% | Aug 14, 2026 |
| Kryger Capital LLC | Reduce 30.32% | -$14.7M | $33.9M | 1.93% | Aug 14, 2026 |
| PSquared Asset Management AG | Sell 100% | -$14M | $0 | 0.00% | Aug 17, 2026 |
| Caisse de depot et placement du Quebec | Sell 100% | -$13.7M | $0 | 0.00% | Aug 14, 2026 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Reduce 91.77% | -$13.4M | $1.2M | 0.00% | Aug 13, 2026 |
| Adage Capital Partners GP, L.L.C. | Added 30.90% | +$13.2M | $55.8M | 0.08% | Aug 14, 2026 |
| Harvest Management LLC | Added 219.37% | +$12.5M | $18.2M | 7.13% | Aug 14, 2026 |
| Ursa Fund Management, LLC | Sell 100% | -$11.5M | $0 | 0.00% | Aug 14, 2026 |
| Healthcare of Ontario Pension Plan Trust Fund | Reduce 51.31% | -$11M | $10.4M | 0.01% | Aug 13, 2026 |
| Slotnik Capital, LLC | Added 31.68% | +$10.1M | $42M | 10.85% | Aug 13, 2026 |
| Water Island Capital LLC | Added 25.28% | +$9.59M | $47.5M | 4.42% | Aug 14, 2026 |
| Capital World Investors | Added 6.41% | +$9.12M | $151M | 0.02% | Aug 12, 2026 |
| Teachers Retirement System of the State of Kentucky | Reduce 70.49% | -$8.68M | $3.64M | 0.02% | Aug 12, 2026 |
| Credit Industriel Et Commercial | Added 101.72% | +$8.29M | $16.4M | 1.06% | Jul 24, 2026 |
| First Trust Advisors LP | Reduce 34.62% | -$8.22M | $15.5M | 0.01% | Aug 11, 2026 |
| Quarry LP | Added 65.78% | +$8.17M | $20.6M | 1.71% | Aug 14, 2026 |
| ING Groep NV | Reduce 46.28% | -$8.16M | $9.47M | 0.05% | Aug 13, 2026 |
| Decagon Asset Management LLP | Reduce 15.27% | -$8.08M | $44.8M | 8.54% | Aug 14, 2026 |
| Calamos Advisors LLC | Added 37.35% | +$7.89M | $29M | 0.10% | Jul 31, 2026 |
| Gotham Asset Management, LLC | Added 261.81% | +$7.34M | $10.1M | 0.02% | Aug 14, 2026 |
| Motley Fool Wealth Management, LLC | Sell 100% | -$6.47M | $0 | 0.00% | Aug 6, 2026 |
| P Schoenfeld Asset Management LP | Added 327.41% | +$6.34M | $8.27M | 3.38% | Aug 13, 2026 |
| Capula Management Ltd | Reduce 18.45% | -$5.93M | $26.2M | 0.09% | Aug 14, 2026 |
| SummitTX Capital, L.P. | Reduce 64.81% | -$5.73M | $3.11M | 0.08% | Aug 14, 2026 |
| Holocene Advisors, LP | Added 15.73% | +$5.49M | $40.4M | 0.09% | Aug 14, 2026 |
| Bellevue Group AG | Sell 100% | -$4.03M | $0 | 0.00% | Aug 14, 2026 |
| Washington Trust Advisors, Inc. | Reduce 58.95% | -$3.48M | $2.42M | 0.18% | Jul 29, 2026 |
| Cordgrass Capital Advisors, LLC | Reduce 32.59% | -$3.12M | $6.45M | 2.40% | Aug 6, 2026 |
| Fred Alger Management, LLC | Sell 100% | -$2.98M | $0 | 0.00% | Aug 14, 2026 |
| Abc Arbitrage SA | Added 72.58% | +$2.95M | $7.02M | 0.76% | Jul 20, 2026 |
| R Squared Ltd | Added 344.78% | +$2.82M | $3.63M | 1.91% | Aug 5, 2026 |
| Lighthouse Investment Partners, LLC | Reduce 37.64% | -$2.79M | $4.62M | 0.13% | Aug 14, 2026 |
| Machina Capital S.A.S. | Added 440.61% | +$2.68M | $3.29M | 0.52% | Aug 10, 2026 |
| Bridgewater Associates, LP | Reduce 84.26% | -$2.67M | $499K | 0.00% | Aug 14, 2026 |
| Natixis | Added 7.08% | +$2.6M | $39.3M | 0.16% | Aug 13, 2026 |
| Vazirani Asset Management LLC | Sell 100% | -$2.46M | $0 | 0.00% | Aug 14, 2026 |
| DLD Asset Management, LP | Sell 100% | -$2.37M | $0 | 0.00% | Aug 13, 2026 |
| Gateway Investment Advisers LLC | New Buy | +$2.37M | $2.37M | 0.02% | Jul 20, 2026 |
| Employees Retirement System of Texas | Reduce 94.90% | -$2.37M | $127K | 0.00% | Aug 14, 2026 |
| Retirement Systems of Alabama | Reduce 15.42% | -$2.34M | $12.8M | 0.04% | Jul 28, 2026 |
| USS Investment Management Ltd | New Buy | +$2.08M | $2.08M | 0.01% | Aug 11, 2026 |
| Kintayl Capital LP | Added 225.40% | +$2.02M | $2.92M | 1.16% | Aug 14, 2026 |
| Capricorn Fund Managers Ltd | Sell 100% | -$1.93M | $0 | 0.00% | Jul 24, 2026 |
| Diversify Wealth Management, LLC | Reduce 70.06% | -$1.85M | $792K | 0.01% | Jul 30, 2026 |
| Highland Capital Management, LLC | Sell 100% | -$1.73M | $0 | 0.00% | Jul 21, 2026 |
| Scholtz & Company, LLC | Sell 100% | -$1.7M | $0 | 0.00% | Aug 11, 2026 |
| Graham Capital Management, L.P. | New Buy | +$1.67M | $1.67M | 0.03% | Aug 14, 2026 |
| Caxton Associates LLP | Reduce 2.86% | -$1.67M | $56.6M | 1.06% | Aug 14, 2026 |
| MUFG Securities EMEA plc | New Buy | +$1.58M | $1.58M | 0.02% | Aug 12, 2026 |
| Odyssean, LLC | Added 112.19% | +$1.56M | $2.95M | 0.48% | Aug 14, 2026 |
| Picton Mahoney Asset Management | Reduce 6.00% | -$1.52M | $23.7M | 0.18% | Aug 13, 2026 |
| Rock Springs Capital Management LP | Reduce 3.94% | -$1.5M | $36.5M | 1.78% | Aug 14, 2026 |
| Illinois Municipal Retirement Fund | Reduce 75.56% | -$1.45M | $469K | 0.01% | Aug 12, 2026 |
| Weiss Asset Management LP | New Buy | +$1.37M | $1.37M | 0.01% | Aug 14, 2026 |
| Laird Norton Wetherby Trust Company, LLC | Reduce 32.22% | -$1.32M | $2.77M | 0.05% | Aug 14, 2026 |
| Ossiam | Reduce 50.67% | -$1.29M | $1.26M | 0.02% | Aug 13, 2026 |
| Argonautica Private Wealth Management, Inc | Sell 100% | -$1.22M | $0 | 0.00% | Jul 28, 2026 |
| Oak Thistle LLC | Reduce 44.03% | -$1.17M | $1.49M | 0.14% | Jul 21, 2026 |
| Skandinaviska Enskilda Banken AB (publ) | Reduce 21.88% | -$1.11M | $3.95M | 0.15% | Aug 10, 2026 |
| Linden Thomas Advisory Services, LLC | Reduce 35.04% | -$1.1M | $2.05M | 0.17% | Jul 16, 2026 |
| Nelson Capital Management, LLC | New Buy | +$1.1M | $1.1M | 0.12% | Jul 24, 2026 |
| Susquehanna Portfolio Strategies, LLC | Reduce 4.95% | -$1.1M | $21.1M | 0.34% | Aug 14, 2026 |
| Guggenheim Capital LLC | Reduce 59.68% | -$1.05M | $710K | 0.00% | Aug 12, 2026 |
| Equitec Proprietary Markets, LLC | Sell 100% | -$920K | $0 | 0.00% | Jul 20, 2026 |
| Van Eck Associates Corp | Reduce 58.22% | -$912K | $655K | 0.00% | Aug 14, 2026 |
| New York Life Investment Management LLC | Added 15.10% | +$883K | $6.73M | 0.05% | Aug 10, 2026 |
| Canada Pension Plan Investment Board | Reduce 19.03% | -$871K | $3.71M | 0.00% | Aug 14, 2026 |
| Rathbones Group PLC | Reduce 50.55% | -$865K | $846K | 0.00% | Jul 23, 2026 |
| NORTHSTAR ASSET MANAGEMENT Co | New Buy | +$846K | $846K | 0.16% | Jul 27, 2026 |
| CSS LLC | Added 7.19% | +$821K | $12.2M | 0.48% | Aug 14, 2026 |
| Fortress Investment Group LLC | Added 16.76% | +$777K | $5.41M | 1.02% | Aug 14, 2026 |
| VANGUARD ASSET MANAGEMENT, Ltd | Added 7.30% | +$774K | $11.4M | 0.01% | Aug 13, 2026 |
| Alliance Wealth Advisors, LLC | Sell 100% | -$725K | $0 | 0.00% | Jul 23, 2026 |
| Inspire Investing, LLC | New Buy | +$721K | $721K | 0.03% | Aug 12, 2026 |
| Portside Wealth Group, LLC | Sell 100% | -$710K | $0 | 0.00% | Jul 14, 2026 |
| Keybank National Association | Sell 100% | -$622K | $0 | 0.00% | Jul 28, 2026 |
| Versor Investments LP | Added 43.07% | +$617K | $2.05M | 4.31% | Aug 7, 2026 |
| Motley Fool Asset Management LLC | Reduce 11.06% | -$601K | $4.83M | 0.19% | Aug 6, 2026 |
| Agf Management Ltd | Reduce 16.65% | -$599K | $3M | 0.01% | Aug 10, 2026 |
| Pacer Advisors, Inc. | Reduce 26.74% | -$588K | $1.61M | 0.00% | Aug 13, 2026 |
| Quantinno Capital Management LP | Added 13.44% | +$579K | $4.89M | 0.01% | Aug 13, 2026 |
| Trillium Asset Management, LLC | Added 10.38% | +$530K | $5.64M | 0.17% | Aug 11, 2026 |
| Norden Group LLC | Reduce 70.28% | -$510K | $216K | 0.02% | Jul 29, 2026 |
| Handelsbanken Fonder AB | Added 14.04% | +$505K | $4.1M | 0.01% | Jul 10, 2026 |