Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in YARW held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | ADAR1 Capital Management, LLC | 3.0M | $1.9M | +177.3% | 8.541% | 0.09% |
| 2 | Nantahala Capital Management, LLC | 2.0M | $1.3M | 0.0% | 5.790% | 0.02% |
| 3 | Lynx1 Capital Management LP | 1.6M | $1.1M | 0.0% | 4.715% | 0.08% |
| 4 | Shay Capital LLC | 1.5M | $948K | -9.5% | 4.217% | 0.06% |
| 5 | Deeter Investments LLP | 1.0M | $651K | — | 2.895% | 0.09% |
| 6 | T3 Companies, LLC | 945K | $615K | 0.0% | 2.736% | 0.66% |
| 7 | BRAIDWELL LP | 916K | $596K | 0.0% | 2.652% | 0.02% |
| 8 | KVP Capital Advisors, LP | 501K | $326K | 0.0% | 1.449% | 0.24% |
| 9 | CITADEL ADVISORS LLC | 468K | $305K | -8.9% | 1.356% | 0.00% |
| 10 | TWO SIGMA INVESTMENTS, LP | 439K | $286K | +2.9% | 1.270% | 0.00% |
| 11 | Ikarian Capital, LLC | 265K | $172K | 0.0% | 0.767% | 0.02% |
| 12 | VANGUARD CAPITAL MANAGEMENT LLC | 265K | $172K | 0.0% | 0.766% | 0.00% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 258K | $168K | -20.0% | 0.747% | 0.00% |
| 14 | VANGUARD FIDUCIARY TRUST CO | 183K | $119K | 0.0% | 0.531% | 0.00% |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 119K | $77K | +105.9% | 0.344% | 0.00% |
| 16 | Rangeley Capital, LLC | 113K | $74K | -4.2% | 0.327% | 0.07% |
| 17 | XTX Topco Ltd | 79K | $51K | -50.3% | 0.228% | 0.00% |
| 18 | SUPERSTRING CAPITAL MANAGEMENT LP | 61K | $40K | — | 0.177% | 0.03% |
| 19 | UBS Group AG | 59K | $38K | -67.4% | 0.170% | 0.00% |
| 20 | STALEY CAPITAL ADVISERS INC | 51K | $33K | 0.0% | 0.149% | 0.00% |
| 21 | BlackRock, Inc. | 44K | $29K | 0.0% | 0.129% | 0.00% |
| 22 | NORTHERN TRUST CORP | 44K | $28K | +89.0% | 0.126% | 0.00% |
| 23 | JANE STREET GROUP, LLC | 41K | $27K | -57.2% | 0.119% | 0.00% |
| 24 | TWO SIGMA SECURITIES, LLC | 41K | $26K | — | 0.118% | 0.00% |
| 25 | RENAISSANCE TECHNOLOGIES LLC | 23K | $15K | +34.7% | 0.068% | 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 YARW — a direct measure of their conviction.
Filings activity in YARW during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new YARW position in Q2 2026
Institutions that fully closed their YARW position in Q2 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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 47 | +4.4% | 42.02% | +3.79 pp | $9M | +20% |
| Q1 2026 | 45 | +4.7% | 38.23% | +15.81 pp | $8M | +76% |
| Q4 2025 | 43 | +19% | 22.42% | +11.98 pp | $4M | +272% |
| Q3 2025 | 36 | 23% | 10.44% | 13.54 pp | $1M | 91% |
| Q2 2025 | 47 | +21% | 23.98% | +2.35 pp | $13M | +16% |
| Q1 2025 | 39 | +11% | 21.63% | +0.64 pp | $11M | 51% |
| Q4 2024 | 35 | +6.1% | 20.99% | 1.87 pp | $23M | +64% |
| Q3 2024 | 33 | — | 22.86% | — | $14M | — |
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 YARW stock.
Based on Q2 2026 13F filings, institutional ownership of Yarrow Bioscience Inc stands at 42.0%, held across 47 reporting institutions.
ADAR1 Capital Management, LLC is the largest reported institutional holder of YARW, with approximately 2,950,000 shares worth $0.00B as of Q2 2026.
Yes — 6 widely-followed marquee investors appear among the top 25 institutional holders of YARW, including CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP, SUSQUEHANNA INTERNATIONAL GROUP, LLP, JANE STREET GROUP, LLC, TWO SIGMA SECURITIES, LLC.
Our composite Smart Money Score for YARW is 81 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
5 institutions opened new positions in YARW during Q2 2026, while 3 fully exited. 29 added to existing positions and 8 trimmed.
YARW institutional ownership rose by 3.79 percentage points quarter-over-quarter, with a net change of +2 holders.
The top 10 institutions account for 87.7% of all reported 13F value in YARW, and the top 25 account for 99.5%.
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.
Yarrow Bioscience Inc (YARW) Institutional Ownership