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Institutional Cluster ·Filed Oct 12, 2026

MASI

MASIMO CORP
BEARISH
Impact 4/10
Horizonweeks Processed15d 11h ago
Institutional cluster: 0 buyers, 70 sellers (bearish)
Actionable Insight ▼ Bearish

The uniform total-exit pattern across both passive and active managers strongly suggests an index removal or benchmark change rather than a discretionary bearish call. Monitor for an index reconstitution announcement or a corporate event (delisting, acquisition, or significant governance change) that would trigger forced selling by passive funds. If no such event is confirmed, this cluster may represent a one-time structural unwind rather than ongoing selling pressure.

DirectionBearish
Confidencemedium
Horizonweeks

Executive Summary

A massive institutional cluster shows 70 funds completely exiting MASI in Q2 2026, with aggregate net selling of $1.08B. The exits are dominated by mega-passive managers (Fidelity, Geode, Goldman Sachs, JPMorgan, Morgan Stanley, BofA, Schwab) and asset managers (Capital Group, Dimensional, American Century). This uniform, total-exit pattern across passive and active managers suggests a structural event — likely index removal or a forced liquidation — rather than a discretionary bearish thesis.

Key Financial Metrics

Direction
distributing
Buy Value
$0.00
Sell Value
$1.1B
Net Flow
-$1.1B

Institutional Positions

Net institutional flow: -$1.1B

▼ Sellers (70)

InstitutionActionChangePrev ValueValue Δ
FidelityEXIT-100%$258.1M-$258.1M
Goldman SachsEXIT-100%$175.1M-$175.1M
GeodeEXIT-100%$170.2M-$170.2M
Morgan StanleyEXIT-100%$133.8M-$133.8M
JPMorganEXIT-100%$101.5M-$101.5M
SchwabEXIT-100%$68.8M-$68.8M
Capital GroupEXIT-100%$63.9M-$63.9M
BofAEXIT-100%$41.3M-$41.3M
American Century CompaniesEXIT-100%$33.5M-$33.5M
Dimensional Fund AdvisorsEXIT-100%$29.2M-$29.2M

Key Facts

  • 70 institutional sellers exited MASI completely in Q2 2026, with zero buyers
  • Aggregate net selling of $1.08B across all tracked funds
  • Mega-passive managers (Fidelity, Geode, Goldman Sachs, JPMorgan, Morgan Stanley, BofA, Schwab) accounted for the majority of exits
  • Asset managers Capital Group, Dimensional Fund Advisors, and American Century also fully exited
  • No institutional buyers were identified in the cluster

Financial Impact

70 institutions sold $1.08B in MASI positions, with all sellers fully exiting. The largest single exit was Fidelity ($258.1M), followed by Goldman Sachs ($175.1M) and Geode ($170.2M).

institutional ownershipfloat

Risk Factors

  • 13F data is 45+ days stale — the selling may have already been completed or reversed
  • Uniform exit pattern suggests a mechanical (index removal) rather than fundamental thesis, limiting predictive value for future price action
  • No insider buying or other corroborating signals to confirm the bearish thesis

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-MASI-2026-Q2
10 reports for MASI
Performance horizon
75% Hit rate @ T+20 3 of 4 directional calls Went positive at some point 4 of 5 best @ T+60▲ +1.94%Feb 27, 2026
Filters
Rows
Reports for MASI — sortable, filterable
TypeNow
Oct 12, 2026
15d ago
Institutional Cluster
BEARISH ★ 4/10
—awaiting T+20——
Jun 22, 2026
18w ago
15-12G
NEUTRAL ★ 4/10
—awaiting T+20——
Jun 10, 2026
19w ago
8-K
BULLISH ★ 8/10
$179.95awaiting T+20——
May 4, 2026
25w ago
8-K
BULLISH ★ 8/10
$177.90 $178.59▲ +0.39%▼ −5.26%—
Apr 21, 2026
27w ago
Court Ruling
BEARISH ★ 6/10
$178.21 $178.80▼ −0.33%▲ +4.59%—
Apr 1, 2026
29w ago
DEFM14A
BULLISH ★ 8/10
$177.95 $178.46▲ +0.28%▼ −9.44%—
Mar 18, 2026
31w ago
PREM14A
NEUTRAL ★ 4/10
$178.51 $177.96▼ −0.31%▼ −7.93%—
Feb 27, 2026
34w ago
DFAN14A
BULLISH ★ 9/10
$175.27 $177.00▲ +0.99%▲ +8.93%—
Jan 23, 2026
39w ago
Court Ruling
NEUTRAL ★ 2/10
$142.48awaiting T+20——
Jan 23, 2026
39w ago
Court Ruling
NEUTRAL ★ 2/10
$142.48awaiting T+20——
Showing 10 of 10

US Market Status

Market Closed — Opens Wed (< 1m)

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Report published Oct 12, 2026