Institutional Cluster

PEPG

PepGen Inc.
NEUTRAL
Impact 3/10
Horizonweeks Processed3mo ago
Institutional cluster: 4 buyers, 1 sellers (bullish)
Actionable Insight • Neutral

The cluster is entirely passive/index-fund buying, likely reflecting Q4 2025 index rebalancing rather than fundamental conviction. With 0% historical win rate at T+20 and calibration showing negative expected alpha, this filing provides no actionable signal. Monitor for active manager 13F filings or insider buying for genuine conviction signals.

DirectionNeutral
Confidencemedium
Horizonweeks
Final — all horizons settled through T+60d ⚠ clustered
PEPG ▲ +105.96% at T+60d
NEUTRAL call ✓ call won +105.96% · α vs SPY +101.56% · entry $1.51 → $3.11
Entry anchored
Jun 10, 03:59 PM ET
via exchange tick
T+1d
-2.65%
call -2.65% · α -3.19%
$1.47
settled 4mo ago
T+5d
+12.58%
call +12.58% · α +12.15%
$1.70
settled 4mo ago
T+20d
+52.32%
call +52.32% · α +50.43%
$2.30
settled 3mo ago
T+60d
+105.96%
call +105.96% · α +101.56%
$3.11
settled 24d ago

Executive Summary

Four mega-passive institutional investors (Vanguard, BlackRock, State Street, Morgan Stanley) significantly increased their PEPG positions in Q4 2025, adding a net $17.7M in holdings. The buying is dominated by index-fund rebalancing rather than active manager conviction, and the stock has a history of severe post-filing drawdowns (avg -62% T+20). The cluster signal is weak due to passive fund composition and poor historical calibration.

Key Financial Metrics

Direction
accumulating
Buy Value
$30.9M
Sell Value
$11.0K
Net Flow
$17.7M

Institutional Positions

Net institutional flow: $17.7M

▲ Buyers (4)

InstitutionActionChangePosition ValueValue Δ
VanguardADD+25.1%$14.4M$6.2M
BlackRockDOUBLED+174.2%$8.0M$6.0M
State StreetDOUBLED+230.6%$1.4M$1.1M
Morgan StanleyADD+88.5%$7.1M$4.4M

▼ Sellers (1)

InstitutionActionChangePrev ValueValue Δ
FidelityTRIM-31.5%$11.0K-$394.00

Key Facts

  • 4 mega-passive funds added $17.7M in aggregate PEPG positions during Q4 2025
  • BlackRock and State Street both doubled their positions; Vanguard and Morgan Stanley added 25% and 89% respectively
  • Fidelity trimmed a negligible $394 position, representing no material selling pressure
  • All 4 buyers are mega-passive index/rebalancing funds — zero active manager participation
  • Historical PEPG reports show 0% win rate at T+20 with avg -62% return
  • Score calibration shows only 34% probability of positive T+20 return for scores 6-8 in this segment

Financial Impact

4 institutions accumulated $17.7M in new PEPG positions (total holdings $30.9M); 1 seller reduced by $394

institutional ownershipfloat

Risk Factors

  • All buyers are passive funds — no active manager conviction behind the cluster
  • Historical PEPG reports show severe negative returns at T+20 (avg -62%)
  • Score calibration indicates only 34% probability of positive T+20 return for this impact level
  • 13F data is 45+ days stale; positions may have been unwound

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
85% bullish (13 analysts)

Investment Themes

Biotech & Drug Discovery

Documents Analyzed

This report is based on 1 institutional 13F filing from SEC EDGAR.

DocumentAccession Number
INST-CLUSTER Data (Synthetic)inst-cluster-PEPG-2025-Q4
8 reports for PEPG
Performance horizon
67% Hit rate 2 of 3 directional calls best @ T+20▲ +31.95%Aug 6, 2026
Filters
Rows
Reports for PEPG — sortable, filterable
TypeNow
Aug 6, 2026
8w ago
8-K
BULLISH ★ 7/10
$2.41 $3.18▲ +31.95%▲ +31.35%—
Jun 11, 2026
16w ago
Institutional Cluster
NEUTRAL ★ 2/10
$1.51 $2.30▲ +52.32%▲ +50.43%—
Jun 11, 2026
16w ago
Institutional Cluster
NEUTRAL ★ 3/10
$1.51 $2.30▲ +52.32%▲ +50.43%—
May 22, 2026
19w ago
EFFECT
BEARISH ★ 7/10
$1.51 $1.90▼ −25.83%▼ −27.24%—
May 19, 2026
19w ago
S-3
BEARISH ★ 7/10
$1.38 $1.70▼ −23.19%▼ −22.20%—
May 12, 2026
20w ago
8-K
NEUTRAL ★ 5/10
$1.78 $1.51▼ −15.17%▼ −14.56%—
Mar 4, 2026
30w ago
8-K
MIXED ★ 6/10
$5.51 $1.73▼ −68.57%▼ −64.79%—
Mar 4, 2026
30w ago
Insider Cluster
NEUTRAL ★ 3/10
$6.76 $1.74▼ −74.26%▼ −69.84%—
Showing 8 of 8

US Market Status

Market Open — Closes in 3h 40m

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Report published Jun 11, 2026