PepGen PEPG Institutional Ownership

NASDAQ PEPG

$2.42 +0.08 (+3.42%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

72 Institutions

Increased 28 38.9%

Unchanged 19 26.4%

Reduced 25 34.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

75.23%

▼-5.14 pp QoQ

Shares Held by Institutions

52.06Mn

of 69.20Mn outstanding

▲+2.84% QoQ

Shares Outstanding

69.20Mn

17.14Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-21 vs prior quarter

Net Shares Added (QoQ)

+1.44Mn

accumulated since last quarter

Value of Holdings

$121.83Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

PepGen Inc. (NASDAQ:PEPG) has 72 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 75.2% of outstanding shares in June 2026, down from 80.4% in March 2026.
They increased total shares held in PEPG by 2.84% quarter over quarter, and investors in PepGen increased 41.18% from a year ago.
Of these 72 holders, 28 added to their stakes in PepGen, 25 trimmed positions, and 19 made no changes.
Institutional investors collectively held 52.06Mn shares in PepGen as of June 2026, up by 1.44Mn shares quarter on quarter, and up 28.9Mn shares year over year.
RA CAPITAL MANAGEMENT, L.P. leads ownership in PEPG with 20.06Mn shares as of June 30, 2026, equal to 28.99% of outstanding shares.
The most significant purchases of PEPG for the quarter ending June 2026 came from RENAISSANCE TECHNOLOGIES LLC (1.46Mn), ADAR1 Capital Management, LLC (983.45K), GSA CAPITAL PARTNERS LLP (814.57K), MARSHALL WACE, LLP (568.42K), CITADEL ADVISORS LLC (450.46K).
The largest sales of PEPG for the quarter ending June 2026 came from AWM Investment Company, Inc. (1.23Mn), Morgan Stanley (950.14K), Qube Research & Technologies Ltd (607.89K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (366.75K), MILLENNIUM MANAGEMENT LLC (292.38K).
Business Quant data shows the 10 biggest positions in PepGen as of June 2026 are held by RA CAPITAL MANAGEMENT, L.P. (20.06Mn), Commodore Capital LP (4.47Mn), VIKING GLOBAL INVESTORS LP (3.48Mn), Laurion Capital Management LP (2.75Mn), ADAR1 Capital Management, LLC (2.59Mn), Vivo Capital, LLC (2.32Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.94Mn), MILLENNIUM MANAGEMENT LLC (1.79Mn), RENAISSANCE TECHNOLOGIES LLC (1.52Mn), BlackRock, Inc. (1.3Mn).

Form 13F Holdings

72 Institutional Holders

Report period 30 Jun, 2026

Total shares held 52.06Mn

Of outstanding 75.23%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	RA CAPITAL MANAGEMENT, L.P.	0001346824	20,064,545	28.99%	0	0.00%	$36.12Mn
2	Commodore Capital LP	0001831942	4,475,000	6.47%	0	0.00%	$8.06Mn
3	VIKING GLOBAL INVESTORS LP	0001103804	3,482,434	5.03%	0	0.00%	$6.27Mn
4	Laurion Capital Management LP	0001390202	2,750,855	3.98%	0	0.00%	$4.95Mn
5	ADAR1 Capital Management, LLC	0001940272	2,591,085	3.74%	▲983,447	+61.17%	$4.66Mn
6	Vivo Capital, LLC	0001674712	2,325,000	3.36%	0	0.00%	$4.19Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,935,920	2.80%	▼1,779	-0.09%	$3.48Mn
8	MILLENNIUM MANAGEMENT LLC	0001273087	1,786,765	2.58%	▼292,378	-14.06%	$3.22Mn
9	RENAISSANCE TECHNOLOGIES LLC	0001037389	1,520,246	2.20%	▲1,463,446	+2,576.49%	$2.74Mn
10	BlackRock, Inc.	0002012383	1,304,262	1.88%	▲26,478	+2.07%	$2.35Mn
11	MARSHALL WACE, LLP	0001318757	866,992	1.25%	▲568,424	+190.38%	$1.56Mn
12	GSA CAPITAL PARTNERS LLP	0001362033	852,852	1.23%	▲814,566	+2,127.58%	$1.54K
13	CITADEL ADVISORS LLC	0001423053	658,381	0.95%	▲450,459	+216.65%	$1.19Mn
14	AWM Investment Company, Inc.	0001535264	600,000	0.87%	▼1,230,925	-67.23%	$1.08Mn
15	MONIMUS CAPITAL MANAGEMENT, LP	0001848831	587,688	0.85%	▼10,975	-1.83%	$1.06Mn
16	Squarepoint Ops LLC	0001642575	529,083	0.76%	▲382,487	+260.91%	$952.35K
17	GEODE CAPITAL MANAGEMENT, LLC	0001214717	523,473	0.76%	▼12,526	-2.34%	$942.81K
18	Creek Drive Management Group LLC	0002111824	450,000	0.65%	0	0.00%	$810.00K
19	Ikarian Capital, LLC	0001778253	447,165	0.65%	0	0.00%	$804.90K
20	DIADEMA PARTNERS LP	0002026172	373,284	0.54%	▲222,359	+147.33%	$671.91K

Showing 1 to 20 of 72 holders