Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in INAB held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Alyeska Investment Group, L.P. | 944K | $1.4M | -1.4% | 20.372% | 0.00% |
| 2 | FRANKLIN RESOURCES INC | 915K | $1.4M | 0.0% | 19.730% | 0.00% |
| 3 | 683 Capital Management, LLC | 725K | $1.1M | 0.0% | 15.633% | 0.08% |
| 4 | Stonepine Capital Management, LLC | 663K | $982K | +302.3% | 14.312% | 0.78% |
| 5 | BIOS Capital Management, LP | 168K | $248K | -33.8% | 3.620% | 0.47% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 86K | $128K | +311.3% | 1.861% | 0.00% |
| 7 | CAPTRUST FINANCIAL ADVISORS | 33K | $49K | +82.0% | 0.718% | 0.00% |
| 8 | OPPENHEIMER & CO INC | 24K | $36K | — | 0.519% | 0.00% |
| 9 | Texas Capital Bank Wealth Management Services Inc | 24K | $35K | 0.0% | 0.512% | 0.00% |
| 10 | NORTHERN TRUST CORP | 20K | $30K | +17.5% | 0.441% | 0.00% |
| 11 | XTX Topco Ltd | 12K | $18K | -27.1% | 0.268% | 0.00% |
| 12 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 3K | $4K | -89.3% | 0.060% | 0.00% |
| 13 | Tower Research Capital LLC (TRC) | 1K | $2K | -48.4% | 0.027% | 0.00% |
| 14 | JONES FINANCIAL COMPANIES LLLP | 768 | $1K | -37.5% | 0.017% | 0.00% |
| 15 | UBS Group AG | 480 | $710 | -38.2% | 0.010% | 0.00% |
| 16 | BlackRock, Inc. | 84 | $124 | 0.0% | 0.002% | 0.00% |
| 17 | Rockefeller Capital Management L.P. | 83 | $123 | 0.0% | 0.002% | 0.00% |
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 INAB — a direct measure of their conviction.
Filings activity in INAB during Q1 2026, grouped by how each filer changed its position.
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 | 17 | 23% | 79.17% | 46.74 pp | $5M | 37% |
| Q4 2025 | 22 | +22% | 125.91% | +95.06 pp | $9M | +308% |
| Q3 2025 | 18 | +38% | 30.85% | +3.81 pp | $2M | +14% |
| Q2 2025 | 13 | 55% | 27.04% | 26.10 pp | $2M | 49% |
| Q1 2025 | 29 | +7.4% | 53.14% | 60.90 pp | $4M | 53% |
| Q4 2024 | 27 | +0.0% | 114.04% | +83.87 pp | $8M | +278% |
| Q3 2024 | 27 | +0.0% | 30.17% | 69.80 pp | $2M | 70% |
| Q2 2024 | 27 | — | 99.97% | — | $7M | — |
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 INAB stock.
Based on Q1 2026 13F filings, institutional ownership of IN8bio, Inc. stands at 79.2%, held across 17 reporting institutions.
Alyeska Investment Group, L.P. is the largest reported institutional holder of INAB, with approximately 944,319 shares worth $0.00B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of INAB.
Our composite Smart Money Score for INAB is 12 out of 100 (Heavy Distribution). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
1 institutions opened new positions in INAB during Q1 2026, while 6 fully exited. 3 added to existing positions and 13 trimmed.
INAB institutional ownership fell by 46.74 percentage points quarter-over-quarter, with a net change of -5 holders.
The top 10 institutions account for 99.5% of all reported 13F value in INAB, 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.
IN8bio, Inc. (INAB) Institutional Ownership