DaveManuel.com · Institutional Ownership · Who Owns It
Stamps.com Inc (STMP)
Institutional ownership reported to the SEC as of Q3 2021, across 12 quarters.
265
Reporting holders
$18.6B
Reported value
2.4%
Calls
2.8%
Puts
+13
Holder change
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Silphium Asset Management Ltd | $10.4B | 31,580,000 | 4.06% | new | NEW |
| Metropolitan Life Insurance Co/NY | $1.5B | 4,646,000 | 0.02% | 13q | -4.1%-$66.3M |
| BlackRock Inc. | $908.4M | 2,754,459 | 0.03% | 12q | -4.6%-$44.1M |
| VANGUARD GROUP INC | $608.9M | 1,846,250 | 0.02% | 12q | -8.0%-$52.7M |
| HBK INVESTMENTS L P | $277.2M | 840,638 | 1.08% | new | NEW |
| EQUITEC PROPRIETARY MARKETS, LLC | $208.8M incl. $160.1M options CALL+PUT | 147,594 | 38.65% | new | NEW |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $202.5M incl. $123.7M options CALL+PUT | 239,033 | 0.03% | 12q | +1333.3%+$188.4M |
| STATE STREET CORP | $190.0M | 576,160 | 0.01% | 12q | -5.5%-$11.0M |
| GLAZER CAPITAL, LLC | $187.3M | 568,088 | 3.31% | new | NEW |
| MORGAN STANLEY | $166.1M | 503,618 | 0.02% | 16q | +94.1%+$80.5M |
| DISCIPLINED GROWTH INVESTORS INC /MN | $149.8M | 454,255 | 2.97% | 12q | -50.0%-$149.9M |
| MILLENNIUM MANAGEMENT LLC | $142.4M incl. $33.0M options CALL | 331,687 | 0.09% | 4q | +4129.6%+$139.0M |
| Leonteq Securities AG | $136.2M | 413,000 | 0.01% | 4q | -13.2%-$20.8M |
| PEAK6 Investments LLC | $135.0M CALL+PUT | options only | 0.30% | 12q | OPTIONS |
| VISTA EQUITY PARTNERS MANAGEMENT, LLC | $134.2M | 406,975 | 1.30% | 3q | HELD |
| FIL Ltd | $129.3M | 392,000 | 0.14% | new | NEW |
| Verition Fund Management LLC | $127.7M incl. $72.8M options CALL+PUT | 166,405 | 1.11% | new | NEW |
| JPMORGAN CHASE & CO | $125.8M | 381,583 | 0.02% | 12q | +384.1%+$99.8M |
| GROUP ONE TRADING, L.P. | $118.5M incl. $114.9M options CALL+PUT | 10,815 | 0.13% | 12q | HELD |
| Walleye Trading LLC | $116.7M incl. $96.6M options CALL+PUT | 61,138 | 0.42% | 12q | +2195.8%+$111.6M |
| Sutton Wealth Advisors Inc. | $108.2M | 328,000 | 0.04% | 9q | HELD |
| GEODE CAPITAL MANAGEMENT, LLC | $103.3M | 313,156 | 0.01% | 12q | -1.6%-$1.7M |
| Steel Peak Wealth Management LLC | $100.2M | 303,847 | 6.62% | 8q | HELD |
| DIMENSIONAL FUND ADVISORS LP | $88.3M | 267,793 | 0.03% | 12q | -32.6%-$42.8M |
| GOLDMAN SACHS GROUP INC | $77.0M | 233,623 | 0.02% | 12q | +208.1%+$52.0M |
| NORGES BANK | $75.3M | 228,384 | 0.02% | 15q | +415.8%+$60.7M |
| Simcoe Capital Management, LLC | $72.4M | 219,410 | 7.15% | 10q | -70.4%-$172.5M |
| Caption Management, LLC | $69.8M incl. $45.3M options CALL | 74,134 | 0.80% | 3q | +3282.0%+$67.7M |
| CITADEL ADVISORS LLC | $69.4M incl. $62.8M options CALL+PUT | 20,276 | 0.01% | 12q | -17.9%-$15.2M |
| NORTHERN TRUST CORP | $68.5M | 207,639 | 0.01% | 12q | -2.4%-$1.7M |
| Bank of New York Mellon Corp | $62.4M | 189,088 | 0.01% | 12q | -1.7%-$1.1M |
| D. E. Shaw & Co., Inc. | $61.9M incl. $48.5M options CALL+PUT | 40,803 | 0.06% | 12q | -89.7%-$538.9M |
| Archer Investment Corp | $59.7M | 181,000 | 0.02% | 4q | HELD |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $59.2M | 179,360 | 0.14% | 3q | +298833.3%+$59.1M |
| DEUTSCHE BANK AG\ | $52.7M | 159,864 | 0.03% | 15q | +1250.0%+$48.8M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $50.6M | 153,367 | 0.02% | 12q | -3.0%-$1.6M |
| Westchester Capital Management, LLC | $50.5M | 153,064 | 1.45% | new | NEW |
| ALPINE ASSOCIATES MANAGEMENT INC. | $45.8M | 138,800 | 1.49% | new | NEW |
| Beryl Capital Management LLC | $43.7M | 132,503 | 3.07% | new | NEW |
| PRINCIPAL FINANCIAL GROUP INC | $42.2M | 127,985 | 0.03% | 12q | -1.1%-$451.2K |
| Man Group plc | $38.0M | 115,263 | 0.13% | 6q | +265.1%+$27.6M |
| Balyasny Asset Management LLC | $36.8M incl. $33.0M options CALL | 11,624 | 0.15% | new | NEW |
| GABELLI FUNDS LLC | $35.7M | 108,217 | 0.24% | 12q | +1252.7%+$33.1M |
| Penserra Capital Management LLC | $32.7M | 99,224 | 0.68% | 12q | -18.0%-$7.2M |
| HIGHLAND CAPITAL MANAGEMENT FUND ADVISORS, L.P. | $31.3M | 94,817 | 5.38% | new | NEW |
| CANADA PENSION PLAN INVESTMENT BOARD | $28.3M | 85,770 | 0.03% | 10q | +10321.6%+$28.0M |
| IndexIQ Advisors LLC | $26.7M | 81,008 | 0.89% | new | NEW |
| Parametric Portfolio Associates LLC | $26.5M | 80,260 | 0.02% | 12q | -5.8%-$1.6M |
| First Trust Capital Management L.P. | $26.4M | 80,027 | 4.00% | new | NEW |
| AMERIPRISE FINANCIAL INC | $26.1M | 79,281 | 0.01% | 12q | -6.6%-$1.8M |
| CITIGROUP INC | $24.6M | 74,447 | 0.01% | 12q | +236.6%+$17.3M |
| Newtyn Management, LLC | $23.1M | 70,000 | 6.16% | 3q | -54.8%-$28.0M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $22.7M | 68,836 | 0.00% | 12q | -63.9%-$40.1M |
| PRELUDE CAPITAL MANAGEMENT, LLC | $22.0M incl. $10.5M options CALL+PUT | 34,806 | 0.56% | new | NEW |
| NATIXIS | $21.9M | 66,336 | 0.08% | new | NEW |
| ProShare Advisors LLC | $20.9M | 63,280 | 0.06% | 9q | -67.8%-$44.0M |
| BARDIN HILL MANAGEMENT PARTNERS LP | $19.2M | 58,313 | 3.11% | new | NEW |
| CNH PARTNERS LLC | $19.2M | 58,174 | 0.55% | new | NEW |
| ALLIANCEBERNSTEIN L.P. | $18.5M | 55,980 | 0.01% | 12q | +88.9%+$8.7M |
| GARDNER LEWIS ASSET MANAGEMENT L P | $18.1M | 54,751 | 2.56% | new | NEW |
| JANE STREET GROUP, LLC | $17.3M incl. $15.4M options CALL+PUT | 5,971 | 0.01% | 12q | -64.9%-$32.0M |
| UBS OCONNOR LLC | $16.9M | 51,280,000? | 0.13% | new | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $15.7M | 47,688 | 0.10% | new | NEW |
| Legal & General Group Plc | $15.5M | 47,082 | 0.01% | 12q | +1.4%+$217.3K |
| Nuveen Asset Management, LLC | $15.4M | 77,951 | 0.00% | 10q | -41.8%-$11.1M |
| CSS LLC/IL | $15.3M incl. $13.1M options CALL+PUT | 6,500 | 0.65% | new | NEW |
| RHUMBLINE ADVISERS | $14.9M | 45,067 | 0.02% | 12q | -14.4%-$2.5M |
| Alyeska Investment Group, L.P. | $14.3M | 43,505 | 0.18% | new | NEW |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM | $13.9M | 42,233 | 0.01% | 12q | HELD |
| Invesco Ltd. | $13.9M | 42,199 | 0.00% | 12q | -41.0%-$9.7M |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | $13.4M | 40,665 | 0.05% | 12q | +11551.9%+$13.3M |
| Chicago Capital Management, LLC | $13.4M | 40,491 | 6.18% | new | NEW |
| Swiss National Bank | $13.3M | 40,466 | 0.01% | 12q | +0.7%+$98.9K |
| IEQ CAPITAL, LLC | $13.3M | 40,303 | 0.35% | 8q | -13.1%-$2.0M |
| BANK OF AMERICA CORP /DE/ | $12.9M | 39,081 | 0.00% | 12q | +9.3%+$1.1M |
| Public Sector Pension Investment Board | $12.4M | 37,602 | 0.07% | 12q | HELD |
| GABELLI & Co INVESTMENT ADVISERS, INC. | $11.7M | 35,463 | 1.41% | new | NEW |
| DLD Asset Management, LP | $10.7M | 32,564 | 0.78% | new | NEW |
| GAMCO INVESTORS, INC. ET AL | $10.0M | 30,460 | 0.09% | 12q | +164.9%+$6.3M |
| CREDIT SUISSE AG/ | $9.9M | 29,965 | 0.01% | 12q | -29.7%-$4.2M |
| Polar Asset Management Partners Inc. | $9.7M | 29,368 | 0.10% | new | NEW |
| COWEN AND COMPANY, LLC | $9.5M | 28,848 | 0.45% | new | NEW |
| EULAV Asset Management | $9.5M | 28,800 | 0.25% | 12q | HELD |
| BURNEY CO/ | $9.4M | 28,398 | 0.44% | 2q | +0.9%+$79.1K |
| Candriam Luxembourg S.C.A. | $9.2M | 27,857 | 0.06% | new | NEW |
| Pentwater Capital Management LP | $9.1M | 27,716 | 0.09% | new | NEW |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $8.9M | 26,903 | 0.02% | 12q | -5.6%-$530.6K |
| Ergoteles LLC | $8.8M | 26,702 | 0.32% | new | NEW |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $8.8M | 26,576 | 0.16% | new | NEW |
| TWO SIGMA ADVISERS, LP | $8.3M | 25,300 | 0.02% | 12q | +10.0%+$758.5K |
| ROYCE & ASSOCIATES LP | $8.3M | 25,293 | 0.06% | 12q | -33.7%-$4.2M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $8.1M | 24,658 | 0.01% | 12q | +0.6%+$45.2K |
| CLEAR STREET MARKETS LLC | $8.0M CALL+PUT | options only | 0.63% | new | OPTIONS |
| UBS ASSET MANAGEMENT AMERICAS INC | $8.0M | 24,145,000? | 0.00% | 12q | |
| WINTON GROUP Ltd | $7.8M | 23,536 | 0.43% | 5q | +692.7%+$6.8M |
| BARCLAYS PLC | $7.6M | 23,041 | 0.00% | 12q | +63.7%+$3.0M |
| BNP PARIBAS ARBITRAGE, SA | $7.4M | 22,340,000? | 0.01% | 12q | |
| SYQUANT CAPITAL SAS | $7.3M | 22,130 | 4.45% | new | NEW |
| LMR Partners LLP | $7.3M | 22,100 | 0.08% | new | NEW |
| Athos Capital Ltd | $7.3M | 22,000 | 1.76% | new | NEW |
Showing the largest 100 of 270 reported holders. The count of 265 above leaves out 5 positions whose reported value failed our price check; they are listed here as filed.
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2021 | 265 | $18.6B | 53,325,861 | 85 | 54 | 86 | 5.3% |
| Q2 2021 | 252 | $6.1B | 29,079,601 | 28 | 75 | 86 | 4.3% |
| Q1 2021 | 262 | $4.5B | 20,844,336 | 40 | 84 | 95 | 7.5% |
| Q4 2020 | 279 | $5.9B | 28,058,070 | 43 | 103 | 77 | 6.8% |
| Q3 2020 | 271 | $7.0B | 27,744,300 | 60 | 79 | 84 | 4.4% |
| Q2 2020 | 251 | $6.1B | 32,259,281 | 66 | 69 | 78 | 3.3% |
| Q1 2020 | 222 | $5.8B | 43,638,241 | 50 | 58 | 73 | 2.7% |
| Q4 2019 | 204 | $3.5B | 39,947,719 | 38 | 50 | 65 | 5.0% |
| Q3 2019 | 185 | $2.5B | 31,538,858 | 34 | 44 | 69 | 7.5% |
| Q2 2019 | 174 | $1.8B | 36,815,125 | 20 | 68 | 64 | 7.8% |
| Q1 2019 | 252 | $2.9B | 32,133,594 | 52 | 84 | 76 | 10.6% |
| Q4 2018 | 284 | $4.2B | 25,790,413 | 3 | 6 | 4 | 5.3% |