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Institutional Cluster

OM

Outset Medical, Inc.
NEUTRAL
Impact 3/10
Horizonmonths Processed4mo ago
Institutional cluster: 3 buyers, 0 sellers (bullish)
Actionable Insight • Neutral

The cluster is entirely passive index/rebalancing activity — no active manager conviction signal. With no sellers and modest share accumulation from BlackRock/State Street/Morgan Stanley, the data suggests OM may have been added to a small-cap index or was a routine rebalance. Monitor next 13F cycle for any active-fund buying before considering this a genuine catalyst.

DirectionNeutral
Confidencehigh
Horizonmonths
Final — all horizons settled through T+60d
OM ▼ -16.51% at T+60d
NEUTRAL call -16.51% · α vs SPY -20.91% · entry $4.30 → $3.59
Entry = T+0 close
Jun 11, 2026
via day close
T+1d
+4.42%
call +4.42% · α +3.88%
$4.49
settled 5mo ago
T+5d
-6.51%
call -6.51% · α -6.95%
$4.02
settled 4mo ago
T+20d
+3.49%
call +3.49% · α +1.60%
$4.45
settled 4mo ago
T+60d
-16.51%
call -16.51% · α -20.91%
$3.59
settled 7w ago

Executive Summary

In Q3 2025, three mega-passive institutional holders — BlackRock, State Street, and Morgan Stanley — collectively added $3.3M in OM by increasing their positions by 27% to 257%. BlackRock's dollar position actually fell slightly ($1.3M) due to a sharp Q3 price decline, masking the share accumulation. With zero sellers in this tracked cohort, the cluster signals index-driven rebalancing rather than an active investment thesis.

Key Financial Metrics

Direction
accumulating
Buy Value
$28.4M
Net Flow
$3.3M

Institutional Positions

Net institutional flow: $3.3M

▲ Buyers (3)

InstitutionActionChangePosition ValueValue Δ
BlackRockADD+26.9%$17.6M-$1.3M
State StreetADD+61.6%$4.7M$741.0K
Morgan StanleyDOUBLED+256.9%$6.1M$3.8M

Key Facts

  • 3 buyers, 0 sellers among tracked institutions in Q3 2025
  • Aggregate position value: $28.4M, net increase of $3.3M from share accumulation
  • Morgan Stanley doubled its stake (+257%), adding $3.8M in value despite OM's decline
  • BlackRock added 265K shares (+27%) but dollar value fell $1.3M due to price drop
  • All three buyers are mega-passive/index managers, not active funds
  • No institutional sellers in this tracked cohort

Financial Impact

3 mega-passive funds accumulated $28.4M in aggregate OM positions, adding a net $3.3M of new buying; zero tracked institutions sold.

institutional ownershipactive float

Risk Factors

  • 13F data reflects quarter-end positions as of Sep 30, 2025; holdings may have been reduced since
  • All buyers are passive managers — the signal is index rebalancing, not fundamental conviction
  • OM's Q3 price declined sharply (BlackRock's dollar value fell despite adding shares), suggesting fundamental headwinds remain

Market Snapshot

Exchange
Nasdaq
Sector
Electromedical & Electrotherapeutic Apparatus
Analyst Consensus
75% bullish (12 analysts)

Investment Themes

Healthcare & Medical Devices

Documents Analyzed

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

DocumentAccession Number
INST-CLUSTER Data (Synthetic)inst-cluster-OM-2025-Q3
10 reports for OM
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for OM — sortable, filterable
TypeNow
Oct 21, 2026
5d ago
Press Release
NEUTRAL ★ 1/10
$4.17awaiting T+5——
Oct 6, 2026
19d ago
SC 13G/A
BULLISH ★ 5/10
$4.21 $3.84▼ −8.79%▼ −7.81%—
Aug 28, 2026
8w ago
8-K
NEUTRAL ★ 2/10
$3.82 $3.47▼ −9.16%▼ −9.02%—
Aug 14, 2026
10w ago
144
BEARISH ★ 5/10
$4.51 $4.19▲ +7.10%▲ +5.90%—
Jun 11, 2026
19w ago
Institutional Cluster
NEUTRAL ★ 3/10
$4.30 $4.02▼ −6.51%▼ −6.95%—
May 19, 2026
22w ago
Insider Cluster
NEUTRAL ★ 3/10
$4.38 $5.01▲ +14.38%▲ +12.58%—
May 15, 2026
23w ago
144
NEUTRAL ★ 2/10
$3.72 $4.40▲ +18.28%▲ +16.66%—
Apr 27, 2026
26w ago
Press Release
NEUTRAL ★ 1/10
$4.32 $4.33▲ +0.23%▼ −1.46%—
Apr 24, 2026
26w ago
DEFA14A
NEUTRAL ★ 2/10
$4.41 $4.33▼ −1.81%▼ −2.21%—
Apr 8, 2026
28w ago
Press Release
NEUTRAL ★ 3/10
$4.32 $4.40▲ +1.85%▼ −1.33%—
Showing 10 of 10

US Market Status

Market Closed — Opens Tue (16h 36m)

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Report published Jun 11, 2026