The divergence between active asset-manager accumulation and quant-fund exit is a high-conviction structural signal: active managers are betting on fundamental execution of the OCS commercial rollout, while quants are cutting risk regardless of thesis. However, the historical performance data shows four consecutive negative T+20 outcomes (avg -31%) — the market has been wrong on TMDX repeatedly in recent months. Traders should monitor the upcoming quarterly earnings for evidence of OCS case-volume acceleration to validate the activist/active thesis before initiating a long. A break above recent technical resistance on heavy volume would confirm the institutional buying trend.
Executive Summary
TransMedics attracted heavy net institutional accumulation in Q3 2024, with 25 buyers adding $121.7M in new exposure against 11 sellers reducing $86.5M. Buying was concentrated among major active asset managers (FIL, Franklin Resources, Farallon, Ameriprise) all doubling or more-than-doubling positions, while sellers were primarily quant funds exiting entirely (Citadel, D.E. Shaw, Bridgewater). The active-buyer versus quant-seller split suggests fundamental conviction on the OCS platform thesis clashing with systematic risk-off positioning in high-growth medtech.
Key Financial Metrics
Institutional Positions
Net institutional flow: $35.2M
▲ Buyers (25)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Fil (Fidelity) | DOUBLED | +107.4% | $122.7M | $65.9M |
| Franklin Resources | DOUBLED | +124% | $36.3M | $18.1M |
| Norges Bank | ADD | +32.7% | $56.2M | $15.6M |
| Ameriprise Financial | DOUBLED | +112.3% | $19.2M | $10.6M |
| Farallon Capital Management | DOUBLED | +2100% | $6.9M | $6.6M |
▼ Sellers (11)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| D.E. Shaw | EXIT | -100% | $31.7M | -$31.7M |
| Voloridge Investment Management | TRIM | -28.4% | $66.3M | -$16.8M |
| Canada Pension Plan Investment Board | TRIM | -74.6% | $16.1M | -$11.8M |
| Citadel | EXIT | -100% | $11.8M | -$11.8M |
| Prudential Financial | NEAR_EXIT | -95.2% | $9.6M | -$9.1M |
Key Facts
- Net aggregate institutional inflow of $35.2M (25 buyers at +$121.7M vs 11 sellers at -$86.5M)
- FIL (Fidelity) more than doubled its stake to $122.7M — the largest single buyer at +$65.9M
- Franklin Resources doubled to $36.3M (+$18.1M) and Ameriprise doubled to $19.2M (+$10.6M)
- D.E. Shaw fully exited a $31.7M position; Citadel fully exited an $11.8M position
- Farallon Capital Management boosted a near-mid size position by 21x to $6.9M
- Selling was dominated by quant/multi-manager funds (D.E. Shaw, Citadel, Bridgewater, Voloridge) — pattern consistent with systematic risk reduction, not fundamental bearishness
- Past four analyst reports on TMDX have averaged -31% T+20 returns (0% win rate) — caution warranted
Financial Impact
Net institutional inflow of approximately $35.2M, with $147.8M of concentrated active-manager additions offsetting $86.5M of quant/MM fund reductions
Risk Factors
- Active-manager accumulation occurred in Q3 2024; 13F data filed with a 45-day lag may not reflect current positioning
- D.E. Shaw and Citadel full exits indicate sophisticated multi-manager funds see risk factors the active buyers may be underestimating
- Historical TMDX weakness post-report (avg -31% T+20) suggests institutional buying has not yet found a floor
- Potential post-de-SPAC dilution overhang or pending share issuance
- Sector rotation out of high-growth medtech could overwhelm active-manager demand
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-TMDX-2024-Q3 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Jun 12, 2026 16w ago | Institutional Cluster | $72.91 $88.27 | ▲ +21.07% | ▲ +17.80% | — |
Jun 11, 2026 16w ago | Institutional Cluster | $73.59 $89.98 | ▲ +22.27% | ▲ +17.88% | — |
Apr 10, 2026 25w ago | DEFA14A | $114.00 $71.12 | ▼ −37.62% | ▼ −47.95% | — |
Mar 2, 2026 30w ago | Insider Cluster | $147.00 $70.46 | ▼ −52.07% | ▼ −61.39% | — |
Feb 27, 2026 31w ago | 8-K | $145.26 $70.46 | ▼ −51.49% | ▼ −60.88% | — |
Feb 24, 2026 31w ago | 8-K | $131.85 $68.00 | ▼ −48.43% | ▼ −55.38% | — |
US Market Status
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