Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in OTLK held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | ARMISTICE CAPITAL, LLC | 4.2M | $858K | — | 10.131% | 0.03% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 2.0M | $405K | — | 4.782% | 0.00% |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | 604K | $124K | +90.7% | 1.467% | 0.00% |
| 4 | BlackRock, Inc. | 477K | $98K | +18.0% | 1.161% | 0.00% |
| 5 | COMMONWEALTH EQUITY SERVICES, LLC | 470K | $97K | +317.8% | 1.142% | 0.00% |
| 6 | Warberg Asset Management LLC | 275K | $56K | — | 0.668% | 0.02% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 255K | $53K | — | 0.620% | 0.00% |
| 8 | NINE MASTS CAPITAL Ltd | 233K | $48K | — | 0.565% | 0.01% |
| 9 | Connective Capital Management, LLC | 200K | $41K | — | 0.486% | 0.03% |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 177K | $37K | -75.9% | 0.430% | 0.00% |
| 11 | VANGUARD FIDUCIARY TRUST CO | 177K | $36K | — | 0.429% | 0.00% |
| 12 | STATE STREET CORP | 163K | $34K | 0.0% | 0.396% | 0.00% |
| 13 | UBS Group AG | 133K | $27K | -36.5% | 0.324% | 0.00% |
| 14 | SIMPLEX TRADING, LLC | 133K | $27K | +25.4% | 0.323% | 0.00% |
| 15 | GROUP ONE TRADING, L.P. | 114K | $23K | +207.3% | 0.276% | 0.00% |
| 16 | NORTHERN TRUST CORP | 67K | $14K | 0.0% | 0.164% | 0.00% |
| 17 | XTX Topco Ltd | 53K | $11K | +75.3% | 0.129% | 0.00% |
| 18 | LPL Financial LLC | 34K | $7K | +54.3% | 0.082% | 0.00% |
| 19 | JustInvest LLC | 31K | $6K | +101.8% | 0.076% | 0.00% |
| 20 | Corient Private Wealth LLC | 30K | $6K | — | 0.073% | 0.00% |
| 21 | Point72 Asset Management, L.P. | 29K | $6K | — | 0.071% | 0.00% |
| 22 | Christensen, King & Associates Investment Services, Inc. | 28K | $6K | 0.0% | 0.069% | 0.00% |
| 23 | RAYMOND JAMES FINANCIAL INC | 27K | $6K | — | 0.066% | 0.00% |
| 24 | PNC FINANCIAL SERVICES GROUP, INC. | 25K | $5K | +66.7% | 0.061% | 0.00% |
| 25 | Flower City Capital | 20K | $4K | 0.0% | 0.049% | 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 OTLK — a direct measure of their conviction.
Filings activity in OTLK during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new OTLK position in Q1 2026
Institutions that fully closed their OTLK 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 | 51 | 1.9% | 4.17% | 55.37 pp | $2M | 93% |
| Q4 2025 | 52 | +0.0% | 59.54% | +51.21 pp | $29M | +615% |
| Q3 2025 | 52 | 19% | 8.33% | 10.72 pp | $4M | 56% |
| Q2 2025 | 64 | +1.6% | 19.05% | +1.63 pp | $9M | +9.4% |
| Q1 2025 | 63 | +3.3% | 17.42% | +0.45 pp | $9M | +2.6% |
| Q4 2024 | 61 | 7.6% | 16.97% | 73.21 pp | $8M | 81% |
| Q3 2024 | 66 | +0.0% | 90.18% | 37.00 pp | $45M | 29% |
| Q2 2024 | 66 | — | 127.18% | — | $63M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 2, 2026 | Haddadin Yezan Munther | Buy | 29K | $0.83 | $24K |
| May 27, 2026 | Sukhtian Faisal Ghiath | Buy | 122K | $0.41 | $50K |
| May 26, 2026 | Haddadin Yezan Munther | Buy | 34K | $0.44 | $15K |
| May 26, 2026 | THURMAN RANDY H | Buy | 5K | $0.43 | $2K |
| May 26, 2026 | HILZINGER KURT J | Buy | 400K | $0.44 | $177K |
Quick answers to the most common questions about buying OTLK stock.
Based on Q1 2026 13F filings, institutional ownership of Outlook Therapeutics, Inc. stands at 4.2%, held across 51 reporting institutions.
ARMISTICE CAPITAL, LLC is the largest reported institutional holder of OTLK, with approximately 4,168,000 shares worth $0.00B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of OTLK, including RENAISSANCE TECHNOLOGIES LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, Point72 Asset Management, L.P..
Our composite Smart Money Score for OTLK is 47 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
16 institutions opened new positions in OTLK during Q1 2026, while 17 fully exited. 1 added to existing positions and 32 trimmed.
OTLK institutional ownership fell by 55.37 percentage points quarter-over-quarter, with a net change of -1 holders.
The top 10 institutions account for 88.3% of all reported 13F value in OTLK, and the top 25 account for 99.0%.
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.
Outlook Therapeutics, Inc. (OTLK) Institutional Ownership