73% buyers of institutions opening or closing positions this quarter
5 more new buyers than exits, ownership rose 0.00 percentage points vs the prior quarter, and 1 well-known fund manager in the top 25.
73% buyers of institutions opening or closing positions this quarter
200.0% institutional ownership
HGC Investment Management portfolio allocation
Institutional ownership vs Information Technology Services peers
No Form 4 insider transactions on file
Latest positioning in SDHI across 13F flow, ownership shift, marquee holders, and holder-count growth.
Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in SDHI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Magnetar Financial LLC | 1.8M | $18.1M | 0.0% | 35000.000% | 0.18% |
| 2 | ARISTEIA CAPITAL LLC | 1.6M | $17.1M | 0.0% | 33000.000% | 0.35% |
| 3 | TENOR CAPITAL MANAGEMENT Co., L.P. | 1.4M | $14.2M | 0.0% | 27491.980% | 0.22% |
| 4 | Vivaldi Asset Management, LLC | 1.3M | $13.5M | -21.4% | 26067.180% | 0.71% |
| 5 | CNH PARTNERS LLC | 1.3M | $13.0M | -4.0% | 25081.760% | 0.21% |
| 6 | Westchester Capital Management, LLC | 1.2M | $13.0M | -7.4% | 24983.940% | 0.59% |
| 7 | HGC Investment Management Inc. | 1.3M | $12.9M | 0.0% | 25000.000% | 2.86% |
| 8 | METEORA CAPITAL, LLC | 1.1M | $11.7M | -0.1% | 22666.620% | 0.86% |
| 9 | Hudson Bay Capital Management LP | 1.0M | $10.6M | 0.0% | 20500.000% | 0.04% |
| 10 | Polar Asset Management Partners Inc. | 1.0M | $10.3M | 0.0% | 20000.000% | 0.21% |
| 11 | Shaolin Capital Management LLC | 815K | $8.4M | +35.8% | 16292.000% | 0.31% |
| 12 | LINDEN ADVISORS LP | 800K | $8.3M | 0.0% | 16000.000% | 0.05% |
| 13 | MILLENNIUM MANAGEMENT LLC | 745K | $7.7M | -12.1% | 14898.000% | 0.00% |
| 14 | Alberta Investment Management Corp | 700K | $7.3M | 0.0% | 14000.000% | 0.04% |
| 15 | Radcliffe Capital Management, L.P. | 694K | $7.2M | +1.5% | 13876.740% | 0.54% |
| 16 | WOLVERINE ASSET MANAGEMENT LLC | 666K | $6.9M | +294.3% | 13323.020% | 0.07% |
| 17 | D. E. Shaw & Co., Inc. | 662K | $6.9M | +309.4% | 13231.560% | 0.00% |
| 18 | Verition Fund Management LLC | 567K | $5.9M | -4.3% | 11336.140% | 0.04% |
| 19 | PICTON MAHONEY ASSET MANAGEMENT | 500K | $5.2M | 0.0% | 10000.000% | 0.04% |
| 20 | BERKLEY W R CORP | 474K | $4.9M | +111.3% | 9472.360% | 0.26% |
| 21 | TWO SIGMA INVESTMENTS, LP | 416K | $4.3M | 0.0% | 8311.580% | 0.00% |
| 22 | GOLDMAN SACHS GROUP INC | 413K | $4.3M | +0.1% | 8265.180% | 0.00% |
| 23 | Jain Global LLC | 400K | $4.2M | -20.0% | 7997.680% | 0.02% |
| 24 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 400K | $4.1M | 0.0% | 8000.000% | 0.02% |
| 25 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 355K | $3.7M | -11.3% | 7095.120% | 0.18% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in SDHI — a direct measure of their conviction.
Filings activity in SDHI during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new SDHI position in Q1 2026
Institutions that fully closed their SDHI position in Q1 2026
4 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 48 | +12% | 199.99% | +0.00 pp | $258M | +2.1% |
| Q4 2025 | 43 | +16% | 199.99% | +0.00 pp | $253M | +7.9% |
| Q3 2025 | 37 | +8.8% | 199.99% | +0.00 pp | $234M | +12% |
| Q2 2025 | 34 | — | 199.99% | — | $210M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
No recent Form 4 insider transactions on file for SDHI.
Quick answers to the most common questions about buying SDHI stock.
Based on Q1 2026 13F filings, institutional ownership of Siddhi Acquisition Corp stands at 200.0%, held across 48 reporting institutions.
Magnetar Financial LLC is the largest reported institutional holder of SDHI, with approximately 1,750,000 shares worth $0.02B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of SDHI, including TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for SDHI is 56 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
8 institutions opened new positions in SDHI during Q1 2026, while 3 fully exited. 29 added to existing positions and 11 trimmed.
SDHI institutional ownership rose by 0.00 percentage points quarter-over-quarter, with a net change of +5 holders.
The top 10 institutions account for 52.1% of all reported 13F value in SDHI, and the top 25 account for 86.6%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.