The cluster shows strong institutional accumulation from active asset managers, but the 45-day reporting lag means positions may have been adjusted since quarter-end. The lack of insider buying corroboration weakens the signal. Monitor upcoming 10-Q for fundamental catalysts that might explain the concentrated buying.
Executive Summary
Four institutional investors significantly increased their MCK positions in Q3 2026, with two funds more than quadrupling their holdings. The aggregate net buying was $196.9M, concentrated in Assenagon Asset Management's $166.1M increase. No institutional sellers were present in the cluster, and insider activity was divergent with no open-market buying.
Key Financial Metrics
Institutional Positions
Net institutional flow: $196.9M
▲ Buyers (4)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Assenagon Asset Management | DOUBLED | +342.7% | $207.6M | $166.1M |
| Concurrent Investment Advisors | DOUBLED | +404.7% | $14.7M | $12.2M |
| Temasek Holdings (Private) | ADD | +91% | $10.3M | $5.6M |
| Unisuper Management Pty | ADD | +26.1% | $43.9M | $13.1M |
Key Facts
- 4 institutional buyers with aggregate current holdings of $276.5M and net buying of $196.9M
- Assenagon Asset Management more than quadrupled its position (+342.7%), adding $166.1M
- Concurrent Investment Advisors more than quadrupled its position (+404.7%), adding $12.2M
- Temasek Holdings added 91.0% to its position, adding $5.6M
- Unisuper Management added 26.1%, adding $13.1M
- No institutional sellers in the cluster
- Insider activity was divergent (score 17/100) with no open-market insider buying
Financial Impact
4 institutions accumulated $196.9M in net new MCK positions during Q3 2026, bringing total disclosed holdings to $276.5M
Risk Factors
- 13F data is 45+ days stale; positions may have been unwound since quarter-end
- No insider buying to corroborate the institutional thesis
- The cluster is small in absolute dollar terms relative to MCK's $115.8B market cap
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 institutional 13F filing from SEC EDGAR.
| Document | Accession Number |
|---|---|
| INST-CLUSTER Data (Synthetic) | inst-cluster-MCK-2026-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 28, 2026 1d ago | Institutional Cluster | $960.56 | awaiting T+5 | awaiting T+5 | No price |
Oct 27, 2026 3d ago | GOVT-CONTRACT | $960.56 | awaiting T+5 | awaiting T+5 | No price |
Oct 12, 2026 17d ago | Institutional Cluster | $955.76 $1,010.43 | ▲ +5.72% | ▲ +7.21% | No price |
Oct 6, 2026 23d ago | 8-K | $921.67 $961.88 | ▲ +4.36% | ▲ +4.50% | No price |
Aug 28, 2026 8w ago | 8-K | $885.32 $896.29 | ▲ +1.24% | ▲ +1.38% | No price |
Aug 1, 2026 12w ago | GOVT-CONTRACT | $827.14 $879.87 | ▲ +6.38% | ▲ +4.35% | No price |
Jul 1, 2026 17w ago | 8-K | $768.06 $807.33 | ▲ +5.11% | ▲ +4.85% | No price |
Jul 1, 2026 17w ago | GOVT-CONTRACT | $786.30 $805.96 | ▲ +2.50% | ▲ +1.13% | No price |
Jun 30, 2026 17w ago | DEFA14A | $768.06 $807.33 | ▲ +5.11% | ▲ +4.85% | No price |
Jun 12, 2026 19w ago | DEFA14A | $779.78 $744.85 | ▼ −4.48% | ▼ −3.10% | No price |
US Market Status
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