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 | |
|---|---|---|---|---|---|---|
1
Microsoft
MSFT
$3.59T
| $2.01B | 14.05% |
3,887,135
-105,478
| -3% | -$52.9M |
|
|
2
Amazon
AMZN
$2.79T
| $1.3B | 9.08% |
5,925,996
-1,230,840
| -17% | -$282M |
|
|
3
Mastercard
MA
$509B
| $1.07B | 7.5% |
1,889,087
+790,514
| +72% | +$442M |
|
4
TransDigm Group
TDG
$66.4B
| $986M | 6.88% |
747,970
+166,865
| +29% | +$219M |
|
5
Alphabet (Google) Class C
GOOG
$4.18T
| $871M | 6.08% |
3,575,580
| – | – |
|
|
6
Meta Platforms (Facebook)
META
$1.4T
| $861M | 6.01% |
1,172,966
+444,720
| +61% | +$297M |
|
|
7
Visa
V
$693B
| $848M | 5.92% |
2,484,618
+793,177
| +47% | +$270M |
|
|
8
TSMC
TSM
$2.17T
| $738M | 5.15% |
2,643,064
+798,830
| +43% | +$234M |
|
|
9
Ferguson
FERG
$46.9B
| $669M | 4.67% |
2,978,192
-677,444
| -19% | -$162M |
|
|
10
CALL
Amazon
AMZN
$2.79T
| $659M | 4.6% |
3,000,000
-2,000,000
| -40% | -$458M |
|
11
Southern Company
SO
$102B
| $577M | 4.03% |
6,093,608
+1,843,534
| +43% | +$168M |
|
12
Rexford Industrial Realty
REXR
$8.3B
| $378M | 2.64% |
9,191,038
| – | – |
|
13
Entergy
ETR
$48.8B
| $300M | 2.1% |
3,222,534
-216,400
| -6% | -$20.5M |
|
|
14
American Electric Power
AEP
$65.8B
| $289M | 2.01% |
2,565,987
-1,438,699
| -36% | -$170M |
|
15
DTE Energy
DTE
$28.1B
| $283M | 1.97% |
1,998,510
+1,148,697
| +135% | +$156M |
|
16
Brookfield
BN
$93.1B
| $263M | 1.83% |
5,745,527
-1
| -0% | -$46 |
|
17
Equifax
EFX
$22.6B
| $262M | 1.82% |
+1,019,449
| New | +$223M |
|
|
18
Pinnacle West Capital
PNW
$11.8B
| $258M | 1.8% |
+2,877,404
| New | +$258M |
|
19
Union Pacific
UNP
$183B
| $242M | 1.69% |
1,022,833
| – | – |
|
20
NiSource
NI
$19.5B
| $233M | 1.63% |
5,387,780
+238,613
| +5% | +$10.2M |
|
21
S&P Global
SPGI
$127B
| $228M | 1.59% |
+468,653
| New | +$232M |
|
|
22
Alphabet (Google) Class A
GOOGL
$4.22T
| $204M | 1.42% |
839,870
-417,500
| -33% | -$119M |
|
23
WEC Energy
WEC
$34.5B
| $159M | 1.11% |
1,387,672
+289,772
| +26% | +$32.1M |
|
|
24
CSX Corp
CSX
$95.6B
| $145M | 1.01% |
4,072,561
-3,660,381
| -47% | -$131M |
|
25
Western Digital
WDC
$166B
| $138M | 0.96% |
1,146,273
| – | – |
|
Similar funds
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.