Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in PEPG held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | 20.1M | $35.5M | 0.0% | 29.008% | 0.38% |
| 2 | COMMODORE CAPITAL LP | 4.5M | $7.9M | +31.6% | 6.470% | 0.46% |
| 3 | VIKING GLOBAL INVESTORS LP | 3.5M | $6.2M | 0.0% | 5.035% | 0.02% |
| 4 | Laurion Capital Management LP | 2.8M | $4.9M | +34.1% | 3.977% | 0.23% |
| 5 | Vivo Capital, LLC | 2.3M | $4.1M | 0.0% | 3.361% | 0.34% |
| 6 | MILLENNIUM MANAGEMENT LLC | 2.1M | $3.7M | +950.4% | 3.006% | 0.00% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 1.9M | $3.4M | — | 2.801% | 0.00% |
| 8 | AWM Investment Company, Inc. | 1.8M | $3.2M | +40.8% | 2.647% | 0.36% |
| 9 | ADAR1 Capital Management, LLC | 1.6M | $2.8M | +4263.6% | 2.324% | 0.18% |
| 10 | Woodline Partners LP | 1.3M | $2.3M | 0.0% | 1.895% | 0.01% |
| 11 | Pictet Asset Management Holding SA | 1.3M | $2.3M | -3.4% | 1.889% | 0.00% |
| 12 | BlackRock, Inc. | 1.3M | $2.3M | +3.5% | 1.847% | 0.00% |
| 13 | MORGAN STANLEY | 999K | $1.8M | -7.9% | 1.444% | 0.00% |
| 14 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 887K | $1.6M | +84.7% | 1.283% | 0.00% |
| 15 | Ikarian Capital, LLC | 747K | $1.3M | 0.0% | 1.080% | 0.14% |
| 16 | Kalehua Capital Management LLC | 730K | $1.3M | — | 1.055% | 1.09% |
| 17 | Qube Research & Technologies Ltd | 706K | $1.3M | +2161.9% | 1.021% | 0.00% |
| 18 | Nantahala Capital Management, LLC | 681K | $1.2M | -56.0% | 0.985% | 0.06% |
| 19 | MONIMUS CAPITAL MANAGEMENT, LP | 599K | $1.1M | +332.6% | 0.865% | 0.29% |
| 20 | GEODE CAPITAL MANAGEMENT, LLC | 536K | $949K | -1.1% | 0.775% | 0.00% |
| 21 | Creek Drive Management Group LLC | 450K | $797K | — | 0.651% | 0.48% |
| 22 | CITADEL ADVISORS LLC | 364K | $644K | +27.1% | 0.526% | 0.00% |
| 23 | MARSHALL WACE, LLP | 299K | $528K | +2.8% | 0.432% | 0.00% |
| 24 | DRIEHAUS CAPITAL MANAGEMENT LLC | 280K | $495K | -11.1% | 0.405% | 0.00% |
| 25 | Boxer Capital Management, LLC | 273K | $483K | -27.0% | 0.394% | 0.06% |
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 PEPG — a direct measure of their conviction.
Filings activity in PEPG 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 | 90 | +3.4% | 97.07% | 102.92 pp | $99M | 74% |
| Q4 2025 | 87 | +19% | 199.99% | +0.00 pp | $375M | +43% |
| Q3 2025 | 73 | +38% | 199.99% | +174.64 pp | $262M | +916% |
| Q2 2025 | 53 | 25% | 25.35% | 9.51 pp | $26M | 27% |
| Q1 2025 | 71 | +18% | 34.86% | 58.11 pp | $35M | 62% |
| Q4 2024 | 60 | 4.8% | 92.97% | 107.02 pp | $95M | 56% |
| Q3 2024 | 63 | +1.6% | 199.99% | +0.00 pp | $216M | 46% |
| Q2 2024 | 62 | — | 199.99% | — | $401M | — |
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 PEPG stock.
Based on Q1 2026 13F filings, institutional ownership of PepGen Inc. stands at 97.1%, held across 90 reporting institutions.
RA CAPITAL MANAGEMENT, L.P. is the largest reported institutional holder of PEPG, with approximately 20,064,545 shares worth $0.04B as of Q1 2026.
Yes — 4 widely-followed marquee investors appear among the top 25 institutional holders of PEPG, including VIKING GLOBAL INVESTORS LP, MILLENNIUM MANAGEMENT LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC.
Our composite Smart Money Score for PEPG is 52 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
26 institutions opened new positions in PEPG during Q1 2026, while 23 fully exited. 6 added to existing positions and 55 trimmed.
PEPG institutional ownership fell by 102.92 percentage points quarter-over-quarter, with a net change of +3 holders.
The top 10 institutions account for 75.1% of all reported 13F value in PEPG, and the top 25 account for 93.2%.
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.
PepGen Inc. (PEPG) Institutional Ownership