Who owns Siddhi Acquisition (SDHI)
Which tracked institutional funds hold SDHI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SDHI company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-15). 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
13 tracked funds added or opened SDHI while 16 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
SDHI’s largest tracked holder by dollar value, Harraden Circle Investments, LLC, sizes it at 0.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SDHI 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 55 tracked filers holding SDHI, 19 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 SDHI 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
- Crossingbridge Advisors, LLC$2M
- Parallax Volatility Advisers, L.P.$1M
- SONA ASSET MANAGEMENT (US) LLC$1M
Full exits 1
- UBS Group AG$3M
Largest adds
- D. E. Shaw & Co., Inc.$5M
- WOLVERINE ASSET MANAGEMENT LLC$5M
- BERKLEY W R CORP$3M
- Shaolin Capital Management LLC$2M
- MIZUHO SECURITIES USA LLC$1M
- Karpus Management, Inc.$711K
Largest trims
- TENOR CAPITAL MANAGEMENT Co., L.P.$49M
- METEORA CAPITAL, LLC$32M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$8M
- Harraden Circle Investments, LLC$7M
- Sculptor Capital LP$5M
- First Trust Capital Management L.P.$4M
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 |
|---|---|---|---|---|
| Harraden Circle Investments, LLC | 208,079 | $45M | 17.3% | 2026-Q1 |
| ARISTEIA CAPITAL, L.L.C. | 1,650,000 | $17M | 6.6% | 2026-Q1 |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 1,374,599 | $14M | 5.5% | 2026-Q1 |
| First Trust Capital Management L.P. trimmed | 1,303,359 | $13M | 5.2% | 2026-Q1 |
| Westchester Capital Management, LLC trimmed | 1,249,197 | $13M | 5.0% | 2026-Q1 |
| HGC Investment Management Inc. | 1,250,000 | $13M | 5.0% | 2026-Q1 |
| METEORA CAPITAL, LLC trimmed | 1,133,331 | $12M | 4.5% | 2026-Q1 |
| Hudson Bay Capital Management LP added | 1,025,000 | $11M | 4.1% | 2026-Q2 |
| Shaolin Capital Management LLC added | 814,600 | $8M | 3.3% | 2026-Q1 |
| Linden Advisors LP trimmed | 800,000 | $8M | 3.2% | 2026-Q1 |
| Calamos Advisors LLC | 750,000 | $8M | 3.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 744,900 | $8M | 3.0% | 2026-Q2 |
| GLAZER CAPITAL, LLC added | 697,746 | $7M | 2.8% | 2026-Q1 |
| Radcliffe Capital Management, L.P. added | 693,837 | $7M | 2.8% | 2026-Q1 |
| WOLVERINE ASSET MANAGEMENT LLC added | 666,151 | $7M | 2.7% | 2026-Q1 |
| D. E. Shaw & Co., Inc. | 661,578 | $7M | 2.7% | 2026-Q2 |
| Verition Fund Management LLC trimmed | 566,171 | $6M | 2.3% | 2026-Q2 |
| BERKLEY W R CORP added | 473,618 | $5M | 1.9% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP | 415,579 | $4M | 1.7% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 413,259 | $4M | 1.7% | 2026-Q1 |
| Jain Global LLC trimmed | 399,884 | $4M | 1.6% | 2026-Q1 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed | 354,756 | $4M | 1.4% | 2026-Q1 |
| MIZUHO SECURITIES USA LLC added | 341,871 | $4M | 1.4% | 2026-Q1 |
| Karpus Management, Inc. added | 338,870 | $3M | 1.4% | 2026-Q1 |
| LMR Partners LLP | 300,000 | $3M | 1.2% | 2026-Q1 |
| Lineage Point Capital LP | 300,000 | $3M | 1.2% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC trimmed | 253,448 | $3M | 1.0% | 2026-Q2 |
| Crossingbridge Advisors, LLC new | 200,000 | $2M | 0.8% | 2026-Q1 |
| Parallax Volatility Advisers, L.P. new | 137,400 | $1M | 0.6% | 2026-Q1 |
| SONA ASSET MANAGEMENT (US) LLC new | 125,998 | $1M | 0.5% | 2026-Q1 |
| Context Capital Management, LLC | 100,000 | $1M | 0.4% | 2026-Q1 |
| Clear Street Group Inc. trimmed | 69,648 | $720K | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 58,925 | $609K | 0.2% | 2026-Q1 |
| DLD Asset Management, LP | 56,000 | $579K | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 51,310 | $529K | 0.2% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 2,400,000 | $494K | 0.2% | 2026-Q1 |
| Magnetar Financial LLC | 1,750,000 | $402K | 0.2% | 2026-Q2 |
| Sculptor Capital LP | 1,648,895 | $330K | 0.1% | 2026-Q1 |
| Polar Asset Management Partners Inc. | 1,350,000 | $289K | 0.1% | 2026-Q1 |
| AQR Arbitrage LLC trimmed | 1,305,398 | $279K | 0.1% | 2026-Q1 |
| ABC ARBITRAGE SA | 25,000 | $258K | 0.1% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC | 25,000 | $258K | 0.1% | 2026-Q1 |
| Alberta Investment Management Corp | 700,000 | $150K | 0.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC new | 12,852 | $133K | 0.1% | 2026-Q1 |
| PICTON MAHONEY ASSET MANAGEMENT | 500,000 | $103K | 0.0% | 2026-Q1 |
| Periscope Capital Inc. added | 500,000 | $100K | 0.0% | 2026-Q1 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | 483,666 | $100K | 0.0% | 2026-Q1 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 400,000 | $80K | 0.0% | 2026-Q1 |
| TORONTO DOMINION BANK added | 340,000 | $73K | 0.0% | 2026-Q1 |
| MOORE CAPITAL MANAGEMENT, LP | 300,000 | $64K | 0.0% | 2026-Q1 |
| HBK INVESTMENTS L P | 300,000 | $62K | 0.0% | 2026-Q1 |
| K2 PRINCIPAL FUND, L.P. new | 138,991 | $21K | 0.0% | 2026-Q1 |
| READYSTATE ASSET MANAGEMENT LP | 100,000 | $21K | 0.0% | 2026-Q1 |
| Centiva Capital, LP trimmed | 31,268 | $6K | 0.0% | 2026-Q1 |
| MORGAN STANLEY new | 18 | $186 | 0.0% | 2026-Q1 |
| UBS Group AG | 299,300 | $3M | 1.2% | 2025-Q4 stale |
| CLEAR STREET LLC new | 103,169 | $1M | 0.4% | 2025-Q2 stale |
| CANTOR FITZGERALD, L. P. new | 74,780 | $756K | 0.3% | 2025-Q2 stale |
| Tuttle Capital Management, LLC | 25,000 | $258K | 0.1% | 2025-Q3 stale |
| Virtu Financial LLC added | 24,606 | $253K | 0.1% | 2025-Q4 stale |
| CITADEL ADVISORS LLC new | 10,199 | $105K | 0.0% | 2025-Q3 stale |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. new | 0 | — | 0.0% | 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.
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.