Eric Mandelblatt Soroban Capital Partners
Eric Mandelblatt is the founder of Soroban Capital Partners, a fundamental long/short equity firm. Soroban is known for research-intensive positions and a flexible approach across sectors. Mandelblatt’s public portfolio is followed among large fundamental hedge fund managers.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Mastercard
MA
|
+$442M |
| 2 |
Meta Platforms (Facebook)
META
|
+$297M |
| 3 |
Visa
V
|
+$270M |
| 4 |
Pinnacle West Capital
PNW
|
+$258M |
| 5 |
TSMC
TSM
|
+$234M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$282M |
| 2 |
American Electric Power
AEP
|
+$170M |
| 3 |
Ferguson
FERG
|
+$162M |
| 4 |
FirstEnergy
FE
|
+$152M |
| 5 |
CSX Corp
CSX
|
+$131M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 21.04% |
| 2 | Financials | 16.84% |
| 3 | Utilities | 16.1% |
| 4 | Industrials | 16.07% |
| 5 | Communication Services | 13.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
Ameren
AEE
$29.4B
| $130M | 0.91% |
1,248,221
| – | – |
|
27
Seagate
STX
$193B
| $126M | 0.88% |
534,364
| – | – |
|
28
CMS Energy
CMS
$21.4B
| $77.6M | 0.54% |
1,058,781
-527,963
| -33% | -$38.4M |
|
29
Restaurant Brands International
QSR
$28.2B
| $19.2M | 0.13% |
300,000
| – | – |
|
30
Danaher
DHR
$154B
| – | – |
-148,962
| Closed | -$29.5M |
|
|
31
FirstEnergy
FE
$26.6B
| – | – |
-3,312,944
| Closed | -$152M |
|
|
PPL
32
PPL Corp
PPL
$25.9B
| – | – |
-1,188,847
| Closed | -$44.2M |
|
33
Thermo Fisher Scientific
TMO
$233B
| – | – |
-83,404
| Closed | -$40.5M |
|
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Eric Mandelblatt's Q4 2025 Portfolio in Review
As of Q4 2025, Eric Mandelblatt held 33 positions worth $14.3B, up 8.1% from $13.3B the previous quarter. Its ten largest holdings account for 70% of the portfolio.
Eric Mandelblatt deployed $843M of net new capital in Q4 2025, opening 3 new positions and adding to 9 existing holdings. Its largest new stake was Pinnacle West Capital: 2,877,404 shares worth $258M.
By sector, the portfolio is most concentrated in Technology at 21% of assets, down from 21% a quarter earlier, followed by Financials and Utilities.
On the sell side, the largest reduction was Amazon, an estimated $282M trimmed.
- Eric Mandelblatt's largest Q4 2025 buy was Pinnacle West Capital: 2,877,404 shares worth $258M.
- Eric Mandelblatt added most to Mastercard in Q4 2025, an estimated $442M increase.
- Eric Mandelblatt's biggest Q4 2025 reduction was Amazon, cutting an estimated $282M.
- Eric Mandelblatt fully exited FirstEnergy in Q4 2025, selling an estimated $152M.
- Eric Mandelblatt's ten largest holdings make up 70% of its $14.3B portfolio in Q4 2025.
- Eric Mandelblatt opened 3 new positions and closed 4 in Q4 2025.
- Eric Mandelblatt's portfolio value rose 8.1% quarter-over-quarter to $14.3B.
Based on Soroban Capital Partners's 13F filing for Q4 2025, filed 17 Feb 2026.