The cluster is mixed with a slight bearish tilt on net dollar flow, but the buying is concentrated in one fund's large position increase. Monitor next 13F for whether the Assenagon build was sustained or reversed, and whether Robeco's near-exit signals a broader institutional shift.
Executive Summary
A mixed institutional cluster for IBM in Q3 2026 shows three asset managers adding $120.6M in net new holdings, while two sellers reduced by $159.5M, resulting in a net outflow of $38.9M. The buying is concentrated in one fund (Assenagon) that more than sextupled its position, but the largest seller (Robeco) exited nearly 78% of its stake. The cluster follows IBM's Q3 earnings beat and raised FCF guidance reported a week earlier.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$38.9M
▲ Buyers (3)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Assenagon Asset Management | DOUBLED | +611.9% | $146.2M | $119.9M |
| Mather Group | ADD | +57.6% | $2.5M | $474.0K |
| Abn Amro Investment Solutions | ADD | +29.1% | $17.8M | $177.0K |
▼ Sellers (2)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Robeco Institutional Asset Management B.v. | NEAR_EXIT | -77.6% | $156.6M | -$129.1M |
| Flossbach Von Storch Se | TRIM | -38.4% | $58.6M | -$30.4M |
Key Facts
- 3 buyers added $120.6M in net new holdings; 2 sellers reduced by $159.5M
- Assenagon Asset Management doubled its position (+611.9% shares, +$119.9M value)
- Robeco Institutional Asset Management made a near-exit (-77.6% shares, -$129.1M value)
- Net institutional flow was negative $38.9M
- Insider activity is divergent (confluence score 10/100, no open-market insider buying)
- Cluster follows IBM Q3 2026 earnings beat (operating EPS $2.95 vs $2.88 consensus) and raised FCF guidance
Financial Impact
3 buyers accumulated $166.5M in current holdings (net change +$120.6M) while 2 sellers reduced by $159.5M, for a net outflow of $38.9M
Risk Factors
- 13F data is 45+ days stale; positions may have been unwound since quarter-end
- Insider activity is divergent with no open-market insider buying, weakening the buy signal
- Net institutional outflow suggests some large holders are reducing exposure despite positive earnings
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-IBM-2026-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 28, 2026 1d ago | Institutional Cluster | $253.22 | awaiting T+5 | awaiting T+5 | No price |
Oct 21, 2026 8d ago | 8-K | No price | awaiting T+5 | awaiting T+5 | No price |
Oct 21, 2026 8d ago | Press Release | $252.11 $258.28 | ▲ +2.45% | ▲ +1.74% | No price |
Oct 20, 2026 10d ago | Court Ruling | $251.46 $250.25 | ▼ −0.48% | ▼ −0.04% | No price |
Oct 8, 2026 22d ago | 3 | $227.13 $232.14 | ▲ +2.21% | ▲ +4.17% | No price |
Oct 1, 2026 29d ago | 8-K | $222.64 $227.13 | ▲ +2.02% | ▲ +0.86% | No price |
Sep 30, 2026 4w ago | Court Ruling | $225.62 $226.61 | ▲ +0.44% | ▼ −0.86% | No price |
Sep 28, 2026 4w ago | GOVT-CONTRACT | $219.99 $221.29 | ▲ +0.59% | ▼ −1.36% | No price |
Sep 11, 2026 7w ago | GOVT-CONTRACT | $249.09 $231.93 | ▼ −6.89% | ▼ −8.55% | No price |
Aug 26, 2026 9w ago | 144 | $238.79 $234.71 | ▼ −1.71% | ▼ −1.98% | No price |
US Market Status
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