Who owns ASPI (ASPI)
Which tracked institutional funds hold ASPI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ASPI company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
18 tracked funds added or opened ASPI while 35 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ASPI’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes ASPI more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ASPI divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 177 tracked filers holding ASPI, 121 increased or opened the position and 78 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ASPI between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 10
- Encompass Capital Advisors LLC$31M
- VANGUARD CAPITAL MANAGEMENT LLC$22M
- VANGUARD PORTFOLIO MANAGEMENT LLC$4M
- VANGUARD FIDUCIARY TRUST CO$3M
- Philadelphia Financial Management of San Francisco, LLC$3M
- Sara-Bay Financial$3M
Full exits 8
- VANGUARD GROUP INC$30M
- Pacer Advisors, Inc.$12M
- Telemark Asset Management, LLC$4M
- MARSHALL WACE, LLP$4M
- Schonfeld Strategic Advisors LLC$2M
- TWO SIGMA INVESTMENTS, LP$2M
Largest adds
- EXCHANGE TRADED CONCEPTS, LLC$2M
- BARCLAYS PLC$2M
- BlackRock, Inc.$487K
- STATE STREET CORP$396K
- BANK OF MONTREAL /CAN/$394K
- PEAK6 LLC$300K
Largest trims
- Alyeska Investment Group, L.P.$14M
- GOLDMAN SACHS GROUP INC$7M
- CITADEL ADVISORS LLC$6M
- JANE STREET GROUP, LLC$5M
- Rovida Investment Management Ltd$4M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$3M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 8,328,144 | $37M | 9.3% | 2026-Q1 |
| Encompass Capital Advisors LLC added | 6,912,054 | $31M | 7.7% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 5,060,464 | $22M | 5.7% | 2026-Q1 |
| Rovida Investment Management Ltd | 4,100,000 | $18M | 4.6% | 2026-Q1 |
| UBS Group AG added | 2,841,709 | $13M | 3.2% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,740,464 | $12M | 3.1% | 2026-Q1 |
| Alyeska Investment Group, L.P. trimmed | 2,692,166 | $12M | 3.0% | 2026-Q1 |
| STATE STREET CORP added | 2,322,159 | $10M | 2.6% | 2026-Q1 |
| EXCHANGE TRADED CONCEPTS, LLC added | 2,183,554 | $10M | 2.4% | 2026-Q1 |
| AWM Investment Company, Inc. | 2,124,496 | $9M | 2.4% | 2026-Q1 |
| MORGAN STANLEY trimmed | 1,576,413 | $7M | 1.8% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 1,057,340 | $5M | 1.2% | 2026-Q1 |
| BARCLAYS PLC added | 1,012,956 | $4M | 1.1% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 977,170 | $4M | 1.1% | 2026-Q1 |
| Diametric Capital, LP added | 953,505 | $4M | 1.1% | 2026-Q1 |
| NORTHERN TRUST CORP added | 937,523 | $4M | 1.1% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 897,236 | $4M | 1.0% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 887,245 | $4M | 1.0% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 768,006 | $3M | 0.9% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 753,316 | $3M | 0.8% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 684,479 | $3M | 0.8% | 2026-Q1 |
| Philadelphia Financial Management of San Francisco, LLC trimmed | 648,341 | $3M | 0.7% | 2026-Q1 |
| WIM INVESTMENT MANAGEMENT Ltd | 601,400 | $3M | 0.7% | 2026-Q1 |
| GROUP ONE TRADING LLC added | 595,625 | $3M | 0.7% | 2026-Q1 |
| Sara-Bay Financial trimmed | 586,673 | $3M | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 526,795 | $2M | 0.6% | 2026-Q1 |
| Chicago Partners Investment Group LLC new | 374,078 | $2M | 0.5% | 2026-Q1 |
| Shay Capital LLC trimmed | 429,500 | $2M | 0.5% | 2026-Q1 |
| Rathbones Group PLC trimmed | 386,566 | $2M | 0.4% | 2026-Q1 |
| Saba Capital Management, L.P. added | 357,625 | $2M | 0.4% | 2026-Q1 |
| HITE Hedge Asset Management LLC trimmed | 326,227 | $1M | 0.4% | 2026-Q1 |
| Caprock Group, LLC trimmed | 321,000 | $1M | 0.4% | 2026-Q1 |
| Alight Capital Management LP new | 300,000 | $1M | 0.3% | 2026-Q1 |
| Yaupon Capital Management LP new | 300,000 | $1M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp added | 289,009 | $1M | 0.3% | 2026-Q1 |
| IMC-Chicago, LLC trimmed | 268,469 | $1M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 273,462 | $1M | 0.3% | 2026-Q1 |
| Burkehill Global Management, LP | 250,000 | $1M | 0.3% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ added | 231,773 | $1M | 0.3% | 2026-Q1 |
| Purewater Capital LLC new | 211,851 | $936K | 0.2% | 2026-Q1 |
| Swiss National Bank | 210,100 | $929K | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 207,442 | $917K | 0.2% | 2026-Q1 |
| Arosa Capital Management LP | 200,000 | $884K | 0.2% | 2026-Q1 |
| Empowered Funds, LLC added | 185,953 | $822K | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 168,997 | $747K | 0.2% | 2026-Q1 |
| SBI Securities Co., Ltd. added | 164,639 | $728K | 0.2% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 161,030 | $712K | 0.2% | 2026-Q1 |
| PRELUDE CAPITAL MANAGEMENT, LLC trimmed | 153,650 | $679K | 0.2% | 2026-Q1 |
| PFG Investments, LLC trimmed | 152,300 | $673K | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 148,648 | $657K | 0.2% | 2026-Q1 |
| Massar Capital Management, LP | 147,376 | $651K | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 145,627 | $644K | 0.2% | 2026-Q1 |
| Farther Finance Advisors, LLC added | 150,216 | $617K | 0.2% | 2026-Q1 |
| POLEN CAPITAL MANAGEMENT LLC trimmed | 122,970 | $544K | 0.1% | 2026-Q1 |
| STIFEL FINANCIAL CORP added | 120,525 | $533K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 117,678 | $520K | 0.1% | 2026-Q1 |
| Cetera Investment Advisers added | 114,817 | $507K | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 112,476 | $497K | 0.1% | 2026-Q1 |
| Belpointe Asset Management LLC new | 101,562 | $449K | 0.1% | 2026-Q1 |
| Canal Insurance CO | 100,000 | $442K | 0.1% | 2026-Q1 |
| SG Americas Securities, LLC added | 97,985 | $433K | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 93,658 | $414K | 0.1% | 2026-Q1 |
| Marex Group plc added | 91,700 | $405K | 0.1% | 2026-Q1 |
| Pekin Hardy Strauss, Inc. added | 88,450 | $391K | 0.1% | 2026-Q1 |
| FNY Investment Advisers, LLC added | 86,600 | $382K | 0.1% | 2026-Q1 |
| NATIONAL BANK OF CANADA /FI/ added | 86,120 | $380K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 80,641 | $357K | 0.1% | 2026-Q1 |
| PEAK6 LLC added | 79,212 | $350K | 0.1% | 2026-Q1 |
| Penn Capital Management Company, LLC trimmed | 78,822 | $348K | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 78,212 | $346K | 0.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 76,521 | $338K | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 5,533,134 | $30M | 7.5% | 2025-Q4 stale |
| Capital Research Global Investors trimmed | 2,043,567 | $20M | 5.0% | 2025-Q3 stale |
| Rovida Advisors Inc. added | 2,200,000 | $16M | 4.1% | 2025-Q2 stale |
| Driehaus Capital Management LLC added | 1,419,837 | $14M | 3.5% | 2025-Q3 stale |
| Pacer Advisors, Inc. trimmed | 5,239,795 | $10M | 2.5% | 2025-Q4 stale |
| Telemark Asset Management, LLC trimmed | 825,000 | $4M | 1.1% | 2025-Q4 stale |
| MARSHALL WACE, LLP trimmed | 818,129 | $4M | 1.1% | 2025-Q4 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 417,908 | $4M | 1.0% | 2025-Q3 stale |
| MILLENNIUM MANAGEMENT LLC added | 245,985 | $2M | 0.6% | 2025-Q3 stale |
| Schonfeld Strategic Advisors LLC added | 414,875 | $2M | 0.6% | 2025-Q4 stale |
| Concentric Capital Strategies, LP new | 218,054 | $2M | 0.5% | 2025-Q3 stale |
| RENAISSANCE TECHNOLOGIES LLC added | 201,200 | $2M | 0.5% | 2025-Q3 stale |
| TWO SIGMA INVESTMENTS, LP added | 356,237 | $2M | 0.5% | 2025-Q4 stale |
| Baird Financial Group, Inc. new | 192,308 | $2M | 0.5% | 2025-Q3 stale |
| GSA CAPITAL PARTNERS LLP added | 329,488 | $2M | 0.4% | 2025-Q4 stale |
| BOSUN ASSET MANAGEMENT, LLC added | 175,138 | $1M | 0.3% | 2025-Q2 stale |
| SPX Gestao de Recursos Ltda new | 109,600 | $1M | 0.3% | 2025-Q3 stale |
| VARCOV Co. new | 188,649 | $1M | 0.3% | 2025-Q4 stale |
| CenterBook Partners LP trimmed | 175,959 | $825K | 0.2% | 2025-Q1 stale |
| Informed Momentum Co LLC trimmed | 68,148 | $656K | 0.2% | 2025-Q3 stale |
| HRT FINANCIAL LP trimmed | 54,714 | $526K | 0.1% | 2025-Q3 stale |
| AlphaQuest LLC added | 88,177 | $472K | 0.1% | 2025-Q4 stale |
| Jefferies Financial Group Inc. added | 87,260 | $467K | 0.1% | 2025-Q4 stale |
| SOUTHPORT MANAGEMENT, L.L.C. added | 85,000 | $455K | 0.1% | 2025-Q4 stale |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 45,000 | $433K | 0.1% | 2025-Q3 stale |
| MOORE CAPITAL MANAGEMENT, LP trimmed | 80,000 | $428K | 0.1% | 2025-Q4 stale |
| Destination Wealth Management | 56,964 | $419K | 0.1% | 2025-Q2 stale |
| Mariner, LLC added | 41,030 | $395K | 0.1% | 2025-Q3 stale |
| Graham Capital Management, L.P. new | 66,998 | $358K | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.