Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in IBAC held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | JANE STREET GROUP, LLC | 20K | $217K | — | 1.413% | 0.00% |
| 2 | Clear Street Group Inc. | 15K | $160K | -84.8% | 1.040% | 0.00% |
| 3 | MORGAN STANLEY | 51 | $544 | -17.7% | 0.003% | 0.00% |
| 4 | UBS Group AG | 41 | $437 | -99.4% | 0.003% | 0.00% |
| 5 | HRT FINANCIAL LP | 37K | $393 | -5.4% | 2.562% | 0.00% |
| 6 | FLOW TRADERS U.S. LLC | 24K | $256 | -4.4% | 1.662% | 0.01% |
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 IBAC — a direct measure of their conviction.
Filings activity in IBAC during Q1 2026, grouped by how each filer changed its position.
Institutions that fully closed their IBAC position in Q1 2026
8 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 | 6 | 54% | 2.44% | 70.01 pp | $0M | 97% |
| Q4 2025 | 13 | 57% | 72.45% | 127.54 pp | $11M | 86% |
| Q3 2025 | 30 | 21% | 199.99% | +0.00 pp | $81M | 27% |
| Q2 2025 | 38 | 7.3% | 199.99% | +0.00 pp | $111M | +0.0% |
| Q1 2025 | 41 | +21% | 199.99% | +0.00 pp | $111M | +7.7% |
| Q4 2024 | 34 | 17% | 199.99% | +0.00 pp | $103M | 1.3% |
| Q3 2024 | 41 | +7.9% | 199.99% | +0.00 pp | $105M | +8.5% |
| Q2 2024 | 38 | — | 199.99% | — | $96M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying IBAC stock.
Based on Q1 2026 13F filings, institutional ownership of IB Acquisition Corp. Common Stock stands at 2.4%, held across 6 reporting institutions.
JANE STREET GROUP, LLC is the largest reported institutional holder of IBAC, with approximately 20,373 shares worth $0.00B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of IBAC, including JANE STREET GROUP, LLC.
Our composite Smart Money Score for IBAC is 23 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
1 institutions opened new positions in IBAC during Q1 2026, while 8 fully exited. 0 added to existing positions and 5 trimmed.
IBAC institutional ownership fell by 70.01 percentage points quarter-over-quarter, with a net change of -7 holders.
The top 10 institutions account for 100.0% of all reported 13F value in IBAC, and the top 25 account for 100.0%.
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.
IB Acquisition Corp. Common Stock (IBAC) Institutional Ownership