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Institutional Ownership · SEC Form 13F

Who owns ALDF (ALDF)


Which tracked institutional funds hold ALDF, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ALDF 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.

50
Institutional holders
22,691,723
Shares held (tracked funds)

How the tape is positioned

6 tracked funds added or opened ALDF while 5 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

ALDF’s largest tracked holder by dollar value, Harraden Circle Investments, LLC, sizes it at 0.2% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in ALDF 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 50 tracked filers holding ALDF, 12 increased or opened the position and 16 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.

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 ALDF 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 3

  • O'Connor Alternative Investments LLC$1M
  • BNP PARIBAS FINANCIAL MARKETS$988K
  • SONA ASSET MANAGEMENT (US) LLC$591K

Full exits 1

  • OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)$1M

Largest adds

  • BERKLEY W R CORP$555K
  • MIZUHO SECURITIES USA LLC$390K
  • Verition Fund Management LLC$336K

Largest trims

  • UBS Group AG$3M
  • AQR Arbitrage LLC$975K
  • COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS$500K
  • RIVERNORTH CAPITAL MANAGEMENT, LLC$328K

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
Harraden Circle Investments, LLC2,351,288$25M9.6%2026-Q1
Magnetar Financial LLC1,899,098$20M7.7%2026-Q1
AQR Arbitrage LLC trimmed1,513,426$16M6.2%2026-Q1
LMR Partners LLP1,200,000$13M4.9%2026-Q1
Westchester Capital Management, LLC1,159,448$12M4.7%2026-Q1
Hudson Bay Capital Management LP1,100,000$12M4.5%2026-Q1
Linden Advisors LP950,000$10M3.9%2026-Q1
Ghisallo Capital Management LLC900,000$10M3.7%2026-Q1
D. E. Shaw & Co., Inc.880,057$9M3.6%2026-Q1
METEORA CAPITAL, LLC trimmed776,947$8M3.2%2026-Q1
PICTON MAHONEY ASSET MANAGEMENT750,000$8M3.1%2026-Q1
Wealthspring Capital LLC trimmed725,179$8M3.0%2026-Q1
TENOR CAPITAL MANAGEMENT Co., L.P.699,234$7M2.8%2026-Q1
GOLDMAN SACHS GROUP INC605,314$6M2.5%2026-Q1
RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed564,023$6M2.3%2026-Q1
TWO SIGMA INVESTMENTS, LP500,000$5M2.0%2026-Q1
BERKLEY W R CORP added474,710$5M1.9%2026-Q1
Fort Baker Capital Management LP454,193$5M1.8%2026-Q1
GLAZER CAPITAL, LLC trimmed433,671$5M1.8%2026-Q1
WHITEBOX ADVISORS LLC400,000$4M1.6%2026-Q1
TORONTO DOMINION BANK400,000$4M1.6%2026-Q1
GRITSTONE ASSET MANAGEMENT LLC394,214$4M1.6%2026-Q1
Radcliffe Capital Management, L.P. added379,584$4M1.5%2026-Q1
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS trimmed350,000$4M1.4%2026-Q1
Periscope Capital Inc. trimmed350,000$4M1.4%2026-Q1
Alberta Investment Management Corp250,581$3M1.0%2026-Q1
MOORE CAPITAL MANAGEMENT, LP250,000$3M1.0%2026-Q1
Verition Fund Management LLC added205,720$2M0.8%2026-Q1
Mint Tower Capital Management B.V.200,000$2M0.8%2026-Q1
WOLVERINE ASSET MANAGEMENT LLC trimmed195,165$2M0.8%2026-Q1
MIZUHO SECURITIES USA LLC added184,373$2M0.7%2026-Q1
MILLENNIUM MANAGEMENT LLC175,000$2M0.7%2026-Q1
L1 Global Manager Pty Ltd160,000$2M0.7%2026-Q1
Shaolin Capital Management LLC150,000$2M0.6%2026-Q1
CSS LLC/IL added113,555$1M0.5%2026-Q1
O'Connor Alternative Investments LLC new100,000$1M0.4%2026-Q1
BNP PARIBAS FINANCIAL MARKETS new93,462$988K0.4%2026-Q1
Bulldog Investors, LLP56,940$601K0.2%2026-Q1
SONA ASSET MANAGEMENT (US) LLC new55,971$591K0.2%2026-Q1
READYSTATE ASSET MANAGEMENT LP50,512$534K0.2%2026-Q1
DELTEC ASSET MANAGEMENT LLC50,000$528K0.2%2026-Q1
Kepos Capital LP50,000$528K0.2%2026-Q1
Clear Street Group Inc. trimmed50,000$528K0.2%2026-Q1
Schonfeld Strategic Advisors LLC added38,019$401K0.2%2026-Q1
ARISTEIA CAPITAL, L.L.C.33,558$354K0.1%2026-Q1
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed11,543$122K0.0%2026-Q1
UBS Group AG trimmed6,668$70K0.0%2026-Q1
JPMORGAN CHASE & CO trimmed100$1K0.0%2026-Q1
HIGHBRIDGE CAPITAL MANAGEMENT LLC new100$1K0.0%2026-Q1
MORGAN STANLEY trimmed70$7390.0%2026-Q1
Schechter Investment Advisors, LLC new761,474$8M3.0%2025-Q1 stale
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND new550,000$6M2.1%2025-Q1 stale
ExodusPoint Capital Management, LP new214,859$2M0.9%2025-Q2 stale
MIZUHO SECURITIES USA LLC added126,307$1M0.5%2025-Q1 stale
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) new100,000$1M0.4%2025-Q4 stale
K2 PRINCIPAL FUND, L.P.49,297$498K0.2%2025-Q1 stale
Quarry LP trimmed30,000$315K0.1%2025-Q4 stale
Sandia Investment Management LP trimmed30,000$315K0.1%2025-Q4 stale
Alyeska Investment Group, L.P.20,757$223K0.1%2025-Q4 stale
CITADEL ADVISORS LLC new19,575$198K0.1%2025-Q1 stale
BARDIN HILL MANAGEMENT PARTNERS LP new18,330$192K0.1%2025-Q2 stale
Tuttle Capital Management, LLC trimmed15,000$157K0.1%2025-Q4 stale
CLEAR STREET LLC added812$9K0.0%2025-Q2 stale
CONCOURSE FINANCIAL GROUP SECURITIES, INC.00.0%2025-Q2 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