The cluster is dominated by passive/index fund accumulation (Fidelity, JPMorgan, Goldman Sachs) offset by active manager reductions (Marshall Wace, Citadel, Jane Street). Monitor upcoming 13F filings for Q3 to see if the selling trend continues or reverses, and watch for any insider buying or company-specific catalysts that could shift the active manager thesis.
Executive Summary
A mixed institutional cluster in LandBridge Corp (LB) for Q2 2026 shows 17 buyers accumulating $79.6M in net new positions, led by Fidelity ($48.5M add) and Millennium ($15.4M add), while 13 sellers reduced holdings by $99.9M, led by Morgan Stanley ($43.9M trim) and Marshall Wace ($29.4M near-exit). The net selling pressure of $20.3M and dominance of passive/index fund buyers (Fidelity, JPMorgan, Goldman Sachs) versus active sellers (Marshall Wace, Citadel, Jane Street) suggests the cluster reflects index rebalancing and rotation rather than a strong shared thesis.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$20.3M
▲ Buyers (17)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Fidelity | ADD | +33% | $140.7M | $48.5M |
| Millennium | DOUBLED | +1020.1% | $16.7M | $15.4M |
| Goldman Sachs | DOUBLED | +215.4% | $6.2M | $4.5M |
| JPMorgan | DOUBLED | +1138520% | $4.0M | $4.0M |
▼ Sellers (13)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Morgan Stanley | TRIM | -50.4% | $101.9M | -$43.9M |
| Marshall Wace | NEAR_EXIT | -78.9% | $38.8M | -$29.4M |
| Citadel | NEAR_EXIT | -89.1% | $14.1M | -$12.3M |
| Jane Street Group | TRIM | -50.4% | $14.8M | -$6.4M |
Key Facts
- 17 institutional buyers added $79.6M in net new positions, 13 sellers reduced by $99.9M, for a net $20.3M outflow
- Fidelity was the largest buyer, adding $48.5M (33% increase to $140.7M)
- Millennium doubled its position, adding $15.4M (to $16.7M)
- Morgan Stanley was the largest seller, trimming $43.9M (50.4% reduction to $58.0M)
- Marshall Wace near-exited, selling $29.4M (78.9% reduction to $9.4M)
- Quant funds split: Millennium (buyer) vs Citadel/Point72 (sellers)
- Data is as of June 30, 2026, with a 45-day reporting lag
Financial Impact
Net institutional outflow of $20.3M in Q2 2026, with $178.4M in aggregate buyer holdings and $99.9M in aggregate seller reductions
Risk Factors
- 13F data is 45+ days stale; positions may have been unwound since quarter-end
- Net selling pressure from active managers suggests caution despite passive accumulation
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-LB-2026-Q2 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 26, 2026 today | 15-12G | $79.58 | awaiting T+1 | — | — |
Oct 14, 2026 12d ago | 25-NSE | $82.66 $81.25 | ▼ −1.71% | ▼ −1.99% | — |
Oct 14, 2026 12d ago | 25-NSE | $82.66 $81.25 | ▼ −1.71% | ▼ −1.99% | — |
Sep 22, 2026 4w ago | Institutional Cluster | $86.91 $82.11 | ▼ −5.52% | ▼ −4.80% | — |
Sep 22, 2026 5w ago | 8-K | $86.91 $82.11 | ▲ +5.52% | ▲ +4.80% | — |
Sep 21, 2026 5w ago | 8-K | $86.91 $82.11 | ▼ −5.52% | ▼ −4.80% | — |
Aug 11, 2026 10w ago | Insider Cluster | $76.32 $75.28 | ▲ +1.36% | ▲ +2.06% | — |
Apr 30, 2026 25w ago | DEFA14A | $65.97 $64.97 | ▼ −1.51% | ▼ −1.17% | — |
Feb 25, 2026 34w ago | 8-K | $74.32 $74.38 | ▲ +0.08% | ▲ +0.53% | — |
US Market Status
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