Skip to main content Skip to main content
Institutional Ownership · SEC Form 13F

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.

177
Institutional holders
63,381,793
Shares held (tracked funds)
56.8%
Of shares outstanding

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).

FundSharesReported value% of valueQuarter
BlackRock, Inc. added8,328,144$37M9.3%2026-Q1
Encompass Capital Advisors LLC added6,912,054$31M7.7%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new5,060,464$22M5.7%2026-Q1
Rovida Investment Management Ltd4,100,000$18M4.6%2026-Q1
UBS Group AG added2,841,709$13M3.2%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added2,740,464$12M3.1%2026-Q1
Alyeska Investment Group, L.P. trimmed2,692,166$12M3.0%2026-Q1
STATE STREET CORP added2,322,159$10M2.6%2026-Q1
EXCHANGE TRADED CONCEPTS, LLC added2,183,554$10M2.4%2026-Q1
AWM Investment Company, Inc.2,124,496$9M2.4%2026-Q1
MORGAN STANLEY trimmed1,576,413$7M1.8%2026-Q1
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed1,057,340$5M1.2%2026-Q1
BARCLAYS PLC added1,012,956$4M1.1%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new977,170$4M1.1%2026-Q1
Diametric Capital, LP added953,505$4M1.1%2026-Q1
NORTHERN TRUST CORP added937,523$4M1.1%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added897,236$4M1.0%2026-Q1
BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed887,245$4M1.0%2026-Q1
CITADEL ADVISORS LLC trimmed768,006$3M0.9%2026-Q1
VANGUARD FIDUCIARY TRUST CO new753,316$3M0.8%2026-Q1
JANE STREET GROUP, LLC trimmed684,479$3M0.8%2026-Q1
Philadelphia Financial Management of San Francisco, LLC trimmed648,341$3M0.7%2026-Q1
WIM INVESTMENT MANAGEMENT Ltd601,400$3M0.7%2026-Q1
GROUP ONE TRADING LLC added595,625$3M0.7%2026-Q1
Sara-Bay Financial trimmed586,673$3M0.7%2026-Q1
GOLDMAN SACHS GROUP INC trimmed526,795$2M0.6%2026-Q1
Chicago Partners Investment Group LLC new374,078$2M0.5%2026-Q1
Shay Capital LLC trimmed429,500$2M0.5%2026-Q1
Rathbones Group PLC trimmed386,566$2M0.4%2026-Q1
Saba Capital Management, L.P. added357,625$2M0.4%2026-Q1
HITE Hedge Asset Management LLC trimmed326,227$1M0.4%2026-Q1
Caprock Group, LLC trimmed321,000$1M0.4%2026-Q1
Alight Capital Management LP new300,000$1M0.3%2026-Q1
Yaupon Capital Management LP new300,000$1M0.3%2026-Q1
Bank of New York Mellon Corp added289,009$1M0.3%2026-Q1
IMC-Chicago, LLC trimmed268,469$1M0.3%2026-Q1
JPMORGAN CHASE & CO added273,462$1M0.3%2026-Q1
Burkehill Global Management, LP250,000$1M0.3%2026-Q1
BANK OF MONTREAL /CAN/ added231,773$1M0.3%2026-Q1
Purewater Capital LLC new211,851$936K0.2%2026-Q1
Swiss National Bank210,100$929K0.2%2026-Q1
Nuveen, LLC added207,442$917K0.2%2026-Q1
Arosa Capital Management LP200,000$884K0.2%2026-Q1
Empowered Funds, LLC added185,953$822K0.2%2026-Q1
BANK OF AMERICA CORP /DE/ trimmed168,997$747K0.2%2026-Q1
SBI Securities Co., Ltd. added164,639$728K0.2%2026-Q1
TUDOR INVESTMENT CORP ET AL added161,030$712K0.2%2026-Q1
PRELUDE CAPITAL MANAGEMENT, LLC trimmed153,650$679K0.2%2026-Q1
PFG Investments, LLC trimmed152,300$673K0.2%2026-Q1
SEI INVESTMENTS CO added148,648$657K0.2%2026-Q1
Massar Capital Management, LP147,376$651K0.2%2026-Q1
Russell Investments Group, Ltd. added145,627$644K0.2%2026-Q1
Farther Finance Advisors, LLC added150,216$617K0.2%2026-Q1
POLEN CAPITAL MANAGEMENT LLC trimmed122,970$544K0.1%2026-Q1
STIFEL FINANCIAL CORP added120,525$533K0.1%2026-Q1
RHUMBLINE ADVISERS added117,678$520K0.1%2026-Q1
Cetera Investment Advisers added114,817$507K0.1%2026-Q1
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added112,476$497K0.1%2026-Q1
Belpointe Asset Management LLC new101,562$449K0.1%2026-Q1
Canal Insurance CO100,000$442K0.1%2026-Q1
SG Americas Securities, LLC added97,985$433K0.1%2026-Q1
DEUTSCHE BANK AG\ added93,658$414K0.1%2026-Q1
Marex Group plc added91,700$405K0.1%2026-Q1
Pekin Hardy Strauss, Inc. added88,450$391K0.1%2026-Q1
FNY Investment Advisers, LLC added86,600$382K0.1%2026-Q1
NATIONAL BANK OF CANADA /FI/ added86,120$380K0.1%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/ added80,641$357K0.1%2026-Q1
PEAK6 LLC added79,212$350K0.1%2026-Q1
Penn Capital Management Company, LLC trimmed78,822$348K0.1%2026-Q1
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added78,212$346K0.1%2026-Q1
BALYASNY ASSET MANAGEMENT L.P. trimmed76,521$338K0.1%2026-Q1
VANGUARD GROUP INC added5,533,134$30M7.5%2025-Q4 stale
Capital Research Global Investors trimmed2,043,567$20M5.0%2025-Q3 stale
Rovida Advisors Inc. added2,200,000$16M4.1%2025-Q2 stale
Driehaus Capital Management LLC added1,419,837$14M3.5%2025-Q3 stale
Pacer Advisors, Inc. trimmed5,239,795$10M2.5%2025-Q4 stale
Telemark Asset Management, LLC trimmed825,000$4M1.1%2025-Q4 stale
MARSHALL WACE, LLP trimmed818,129$4M1.1%2025-Q4 stale
VOLORIDGE INVESTMENT MANAGEMENT, LLC added417,908$4M1.0%2025-Q3 stale
MILLENNIUM MANAGEMENT LLC added245,985$2M0.6%2025-Q3 stale
Schonfeld Strategic Advisors LLC added414,875$2M0.6%2025-Q4 stale
Concentric Capital Strategies, LP new218,054$2M0.5%2025-Q3 stale
RENAISSANCE TECHNOLOGIES LLC added201,200$2M0.5%2025-Q3 stale
TWO SIGMA INVESTMENTS, LP added356,237$2M0.5%2025-Q4 stale
Baird Financial Group, Inc. new192,308$2M0.5%2025-Q3 stale
GSA CAPITAL PARTNERS LLP added329,488$2M0.4%2025-Q4 stale
BOSUN ASSET MANAGEMENT, LLC added175,138$1M0.3%2025-Q2 stale
SPX Gestao de Recursos Ltda new109,600$1M0.3%2025-Q3 stale
VARCOV Co. new188,649$1M0.3%2025-Q4 stale
CenterBook Partners LP trimmed175,959$825K0.2%2025-Q1 stale
Informed Momentum Co LLC trimmed68,148$656K0.2%2025-Q3 stale
HRT FINANCIAL LP trimmed54,714$526K0.1%2025-Q3 stale
AlphaQuest LLC added88,177$472K0.1%2025-Q4 stale
Jefferies Financial Group Inc. added87,260$467K0.1%2025-Q4 stale
SOUTHPORT MANAGEMENT, L.L.C. added85,000$455K0.1%2025-Q4 stale
Universal- Beteiligungs- und Servicegesellschaft mbH45,000$433K0.1%2025-Q3 stale
MOORE CAPITAL MANAGEMENT, LP trimmed80,000$428K0.1%2025-Q4 stale
Destination Wealth Management56,964$419K0.1%2025-Q2 stale
Mariner, LLC added41,030$395K0.1%2025-Q3 stale
Graham Capital Management, L.P. new66,998$358K0.1%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.

HoldersTotal shares

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.

Learn how to read institutional ownership