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 |
TransDigm Group
TDG
|
+$808M |
| 2 |
Amazon
AMZN
|
+$533M |
| 3 |
Union Pacific
UNP
|
+$231M |
| 4 |
Meta Platforms (Facebook)
META
|
+$115M |
| 5 |
Visa
V
|
+$105M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
CDW
CDW
|
+$265M |
| 2 |
Brookfield
BN
|
+$246M |
| 3 |
Western Digital
WDC
|
+$156M |
| 4 |
Seagate
STX
|
+$151M |
| 5 |
Duke Energy
DUK
|
+$67.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 21.47% |
| 2 | Industrials | 15.86% |
| 3 | Utilities | 15.73% |
| 4 | Communication Services | 12.91% |
| 5 | Consumer Discretionary | 12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
CMS Energy
CMS
$21.4B
| $116M | 0.88% |
1,586,744
+151,574
| +11% | +$10.9M |
|
|
PPL
27
PPL Corp
PPL
$25.9B
| $44.2M | 0.33% |
1,188,847
+294,795
| +33% | +$10.6M |
|
28
Thermo Fisher Scientific
TMO
$233B
| $40.5M | 0.31% |
+83,404
| New | +$38.8M |
|
29
Danaher
DHR
$154B
| $29.5M | 0.22% |
+148,962
| New | +$29.6M |
|
30
Restaurant Brands International
QSR
$28.2B
| $19.2M | 0.15% |
300,000
| – | – |
|
|
31
CDW
CDW
$17.2B
| – | – |
-1,482,087
| Closed | -$265M |
|
32
CenterPoint Energy
CNP
$25.5B
| – | – |
-1,156,380
| Closed | -$42.5M |
|
|
33
Duke Energy
DUK
$93.4B
| – | – |
-570,458
| Closed | -$67.3M |
|
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Eric Mandelblatt's Q3 2025 Portfolio in Review
As of Q3 2025, Eric Mandelblatt held 33 positions worth $13.3B, up 29% from $10.3B the previous quarter. Its ten largest holdings account for 71% of the portfolio.
Eric Mandelblatt deployed $2.26B of net new capital in Q3 2025, opening 4 new positions and adding to 12 existing holdings. Its largest new stake was Union Pacific: 1,022,833 shares worth $242M.
By sector, the portfolio is most concentrated in Technology at 21% of assets, down from 30% a quarter earlier, followed by Industrials and Utilities.
On the sell side, the largest reduction was Brookfield, an estimated $246M trimmed.
- Eric Mandelblatt's largest Q3 2025 buy was Union Pacific: 1,022,833 shares worth $242M.
- Eric Mandelblatt added most to TransDigm Group in Q3 2025, an estimated $808M increase.
- Eric Mandelblatt's biggest Q3 2025 reduction was Brookfield, cutting an estimated $246M.
- Eric Mandelblatt fully exited CDW in Q3 2025, selling an estimated $265M.
- Eric Mandelblatt's ten largest holdings make up 71% of its $13.3B portfolio in Q3 2025.
- Eric Mandelblatt opened 4 new positions and closed 3 in Q3 2025.
- Eric Mandelblatt's portfolio value rose 29% quarter-over-quarter to $13.3B.
Based on Soroban Capital Partners's 13F filing for Q3 2025, filed 14 Nov 2025.