PepGen Inc. (PEPG) Ownership
PEPG ownership summary
as of October 17, 2026- Institutions
- 82.9% of shares outstanding
- Insiders
- 0.23% of shares outstanding
- Shares outstanding
- 69.2M
- Float
- 36.1M shares available to trade
- Short interest
- 8.61% 4.2M shares short
- Days to cover
- 5.20 short interest up 9.2% vs prior month
- Institutions 82.86%
- Insiders 0.23%
- Other investors 16.91%
PEPG top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | RA Capital Management, LLC | 28.97% | 20.1M | $52.2M | — | June 30, 2026 |
| 2 | COMMODORE CAPITAL LP | 6.46% | 4.5M | $11.6M | — | June 30, 2026 |
| 3 | Viking Global Investors LP | 5.03% | 3.5M | $9.1M | — | June 30, 2026 |
| 4 | LAURION CAPITAL MANAGEMENT LP | 3.97% | 2.8M | $7.2M | — | June 30, 2026 |
| 5 | ADAR1 Capital Management LLC | 3.74% | 2.6M | $6.7M | +983,447 (+61.2%) | June 30, 2026 |
| 6 | Vivo Capital, LLC | 3.36% | 2.3M | $6.0M | — | June 30, 2026 |
| 7 | Vanguard Capital Management, LLC | 2.80% | 1.9M | $5.0M | −1,779 (−0.1%) | June 30, 2026 |
| 8 | Millennium Management LLC | 2.58% | 1.8M | $4.6M | −292,378 (−14.1%) | June 30, 2026 |
| 9 | Renaissance Technologies Corp | 2.19% | 1.5M | $4.0M | +1.5M (+2,576.5%) | June 30, 2026 |
| 10 | BlackRock Inc | 1.88% | 1.3M | $3.4M | +26,478 (+2.1%) | June 30, 2026 |
| 11 | Marshall Wace Asset Management Ltd | 1.25% | 867K | $2.3M | +568,424 (+190.4%) | June 30, 2026 |
| 12 | GSA Capital Partners LLP | 1.23% | 853K | $2.2M | +814,566 (+2,127.6%) | June 30, 2026 |
| 13 | Citadel Advisors Llc | 0.95% | 658K | $1.7M | +450,459 (+216.6%) | June 30, 2026 |
| 14 | Awm Investment Company Inc | 0.87% | 600K | $1.6M | −1.2M (−67.2%) | June 30, 2026 |
| 15 | MONIMUS CAPITAL MANAGEMENT, LP | 0.85% | 588K | $1.5M | −10,975 (−1.8%) | June 30, 2026 |
| 16 | Squarepoint Ops LLC | 0.76% | 529K | $1.4M | +382,487 (+260.9%) | June 30, 2026 |
| 17 | Geode Capital Management, LLC | 0.76% | 523K | $1.4M | −12,526 (−2.3%) | June 30, 2026 |
| 18 | Creek Drive Management Group LLC | 0.65% | 450K | $1.2M | — | June 30, 2026 |
| 19 | Ikarian Capital, LLC | 0.65% | 447K | $1.2M | — | June 30, 2026 |
| 20 | Diadema Partners LP | 0.54% | 373K | $970,538 | +222,359 (+147.3%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 8 holders added 4.9M shares and 5 cut 1.5M.
PEPG top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.03% | 1.4M | $3.7M | — | August 31, 2026 |
| 2 | iShares Biotechnology ETF | 0.71% | 495K | $1.3M | −3,752 (−0.8%) | September 30, 2026 |
| 3 | Fidelity Extended Market Index | 0.34% | 232K | $604,354 | +95,469 (+69.7%) | August 31, 2026 |
| 4 | iShares Micro-Cap ETF | 0.19% | 134K | $349,164 | −926 (−0.7%) | September 30, 2026 |
| 5 | A4Investments SICAV SIF ACCI IlanaA2EURH | 0.14% | 100K | $260,000 | +100,000 (0.0%) | September 30, 2026 |
| 6 | Fidelity Total Market Index | 0.12% | 86K | $224,071 | — | August 31, 2026 |
| 7 | EA Bridgeway Ultra-Small Company Mkt ETF | 0.12% | 85K | $220,626 | — | September 30, 2026 |
| 8 | Fidelity Series Total Market Index | 0.10% | 69K | $179,842 | — | August 31, 2026 |
| 9 | iShares Nasdaq US Biotech ETF USD Acc | 0.09% | 63K | $162,557 | +544 (+0.9%) | September 30, 2026 |
| 10 | Avantis US Small Cap Equity ETF | 0.06% | 43K | $110,763 | — | September 30, 2026 |
| 11 | Vanguard Balanced Index Inv | 0.04% | 27K | $69,350 | — | August 31, 2026 |
| 12 | Vanguard MStar Inst Ttl StkMktIdxInstlPl | 0.03% | 20K | $51,711 | — | August 31, 2026 |
| 13 | Vanguard U.S. Eq Idx £ Acc | 0.03% | 18K | $46,080 | — | August 31, 2026 |
| 14 | Fidelity Nasdaq Composite Index | 0.02% | 16K | $42,068 | −27,651 (−63.1%) | August 31, 2026 |
| 15 | DFA US Vector Equity I | 0.02% | 14K | $35,591 | +13,689 (0.0%) | August 31, 2026 |
| 16 | Dimensional US Small Cap ETF | 0.02% | 13K | $34,648 | — | September 30, 2026 |
| 17 | Dimensional US Sustainability Core 1 ETF | 0.02% | 12K | $30,345 | — | September 30, 2026 |
| 18 | China Universal NASDAQ Bio-Tch ETF(QDII) | 0.02% | 11K | $28,621 | −194 (−1.7%) | June 30, 2026 |
| 19 | Dimensional US Core Equity Market ETF | 0.02% | 10K | $27,217 | — | September 30, 2026 |
| 20 | 1290 VT Micro Cap K | 0.01% | 9,517 | $24,744 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
PEPG insider transactions
latest 2| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-09-30 | Science Enterprises Plc Oxford | Buy | $3.20 | 200,000 | $640,000 |
| 2025-05-30 | Paul Streck | Buy | $1.24 | 8,375 | $10,385 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
PEPG shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns PEPG
Institutional investors own 82.9% of PepGen's shares and insiders 0.23%. The largest holder is RA Capital Management, LLC with 28.97% of the shares (20.1M), as of June 30, 2026. Among the top 20 institutions, 8 added shares and 5 reduced their stake in the latest filings. Short interest is 8.61% of the float, or 5.20 days of average trading volume. The share count rose 88.5% since 2020.
Related: PEPG analyst forecast, PEPG key metrics. See the PEPG stock overview for the latest quote and news.
PEPG ownership FAQ
Who owns the most PepGen stock?
The largest shareholders of PepGen are RA Capital Management, LLC (28.97%), COMMODORE CAPITAL LP (6.46%), Viking Global Investors LP (5.03%), LAURION CAPITAL MANAGEMENT LP (3.97%), ADAR1 Capital Management LLC (3.74%).
What percentage of PepGen is owned by institutions?
Institutions hold 82.9% of PepGen's shares outstanding; insiders hold 0.23%.
Which funds own PepGen?
The largest fund holders of PepGen are Vanguard MStar Total Stk Mkt Idx Invest (2.03%), iShares Biotechnology ETF (0.71%), Fidelity Extended Market Index (0.34%), iShares Micro-Cap ETF (0.19%), A4Investments SICAV SIF ACCI IlanaA2EURH (0.14%).
What is PepGen's short interest?
4.2M shares of PepGen were sold short, 8.61% of the float; at the average daily volume it would take 5.20 days to cover.
Are insiders buying or selling PepGen?
Of the latest 2 reported insider transactions in PepGen (since May 30, 2025), 2 were purchases and 0 were sales.
How many shares of PepGen are outstanding?
PepGen has 69.2M shares outstanding, of which 36.1M are in the public float.