The institutional cluster is directionally mixed — the buying is broad-based among active asset managers post-earnings, but the selling is dominated by one massive near-exit (Cantillon) that may reflect a fund-level rebalancing rather than a BLK-specific thesis. With no insider buying and a net outflow of $359M, this does not signal strong conviction. Monitor for further 13F filings to see if the Cantillon exit was idiosyncratic or the start of a broader trend.
Executive Summary
BlackRock's Q2 2026 institutional 13F cluster shows a mixed but notable pattern: 12 buyers accumulated $144.3M in net new positions, while 7 sellers reduced holdings by $503.2M. The buying is dominated by active asset managers (Assenagon, Citigroup, Kestra) adding to positions after BlackRock's strong Q2 earnings beat, but the selling is heavily concentrated in a single near-exit by Cantillon ($415.9M) that overwhelms the aggregate. The cluster lacks insider buying corroboration, and the historical calibration for score-6/7 reports on BLK shows below-50% win rates, suggesting caution on over-weighting this signal.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$358.9M
▲ Buyers (12)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Assenagon Asset Management | ADD | +48.9% | $167.3M | $54.9M |
| Citigroup | ADD | +43.4% | $168.5M | $51.0M |
| Kestra Advisory Services | ADD | +62.6% | $32.8M | $12.6M |
| Imc-Chicago | DOUBLED | +257% | $14.4M | $10.4M |
| Walleye Capital | DOUBLED | +2268.9% | $6.7M | $6.4M |
▼ Sellers (7)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Cantillon | NEAR_EXIT | -95.4% | $435.9M | -$415.9M |
| Pictet Asset Management Holding | TRIM | -29.2% | $136.0M | -$39.6M |
| Flossbach Von Storch Se | TRIM | -26.8% | $56.6M | -$15.2M |
| Fjarde Ap-Fonden /Fourth Swedish National | TRIM | -29.2% | $51.5M | -$15.0M |
| Erste Asset Management | TRIM | -43.2% | $27.1M | -$11.4M |
Key Facts
- 12 institutional buyers added $144.3M in net new BLK positions in Q2 2026
- 7 institutional sellers reduced holdings by $503.2M, led by Cantillon's near-exit of $415.9M
- Buyers include Citigroup (+$51.0M), Assenagon (+$54.9M), and Kestra (+$12.6M)
- Cantillon cut 95.4% of its BLK stake, from $435.9M to $20.1M
- No open-market insider buying corroborates the institutional cluster
- Cluster follows BlackRock's Q2 2026 earnings beat (EPS $13.91 vs $12.67 consensus, revenue $7.08B)
- Historical calibration shows score-6/7 reports on BLK have <50% win rates at T+20
Financial Impact
12 buyers added $144.3M in new positions while 7 sellers reduced by $503.2M, for a net institutional outflow of $358.9M
Risk Factors
- Cantillon's near-exit may signal a negative thesis that other institutions have not yet acted on
- No insider buying to corroborate the bullish institutional signal
- Historical calibration suggests score-6/7 reports on BLK have underperformed at T+20
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-BLK-2026-Q2 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 2, 2026 today | ANALYST-UPGRADE | $1,070.01 awaiting T+20 | awaiting T+20 | — | — |
Aug 26, 2026 5w ago | 3 | $1,167.57 $1,073.45 | ▼ −8.06% | ▼ −7.55% | — |
Aug 25, 2026 5w ago | Press Release | $1,173.21 $1,073.45 | ▼ −8.50% | ▼ −8.65% | — |
Aug 19, 2026 6w ago | Press Release | $1,158.92 $1,053.96 | ▼ −9.06% | ▼ −7.11% | — |
Aug 11, 2026 7w ago | Institutional Cluster | $1,148.84 $1,072.03 | ▼ −6.69% | ▼ −5.63% | — |
Aug 7, 2026 8w ago | 13F-HR | $1,136.28 $1,122.29 | ▼ −1.23% | ▼ −0.83% | — |
Jul 17, 2026 10w ago | Insider Cluster | $1,054.11 $1,143.55 | ▲ +8.48% | ▲ +4.36% | — |
Jul 17, 2026 10w ago | Insider Cluster | $1,054.11 $1,143.55 | ▲ +8.48% | ▲ +4.36% | — |
Jul 17, 2026 11w ago | 144 | $1,072.20 $1,172.46 | ▲ +9.35% | ▲ +4.90% | — |
Jul 16, 2026 11w ago | 144 | $1,072.20 $1,172.46 | ▲ +9.35% | ▲ +4.90% | — |
US Market Status
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