John Overdeck Two Sigma Investments
John Overdeck is a co-founder of Two Sigma Investments, one of the world’s leading quantitative and technology-driven investment firms. Two Sigma applies data science, machine learning, and large-scale computing to markets across asset classes. Overdeck’s firm is a central reference point in discussions of modern systematic investing.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Expanded Tech-Software Sector ETF
IGV
|
+$312M |
| 2 |
UnitedHealth
UNH
|
+$286M |
| 3 |
Duolingo
DUOL
|
+$247M |
| 4 |
Aon
AON
|
+$226M |
| 5 |
Chubb
CB
|
+$221M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$338M |
| 2 |
Marvell Technology
MRVL
|
+$241M |
| 3 |
Advanced Micro Devices
AMD
|
+$240M |
| 4 |
ServiceNow
NOW
|
+$203M |
| 5 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$193M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 16.79% |
| 2 | Financials | 14.46% |
| 3 | Healthcare | 12.9% |
| 4 | Consumer Discretionary | 8.97% |
| 5 | Industrials | 8.82% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1801
EQT Corp
EQT
$33.8B
| $1.89M | ﹤0.01% |
32,415
+27,530
| +564% | +$1.49M |
|
1802
Sportsman's Warehouse
SPWH
$44.1M
| $1.89M | ﹤0.01% |
547,182
+410,219
| +300% | +$919K |
|
1803
First Trust NYSE Arca Biotechnology Index Fund
FBT
$2.96B
| $1.89M | ﹤0.01% |
11,700
-36,100
| -76% | -$5.75M |
|
|
UHT
1804
Universal Health Realty Income Trust
UHT
$586M
| $1.88M | ﹤0.01% |
47,107
+4,978
| +12% | +$196K |
|
1805
Globalstar
GSAT
$10.6B
| $1.88M | ﹤0.01% |
79,784
+8,431
| +12% | +$170K |
|
1806
Otter Tail
OTTR
$3.83B
| $1.88M | ﹤0.01% |
24,348
+10,366
| +74% | +$809K |
|
1807
LegalZoom.com
LZ
$1.01B
| $1.87M | ﹤0.01% |
209,914
+126,354
| +151% | +$1.06M |
|
1808
Candel Therapeutics
CADL
$1.04B
| $1.87M | ﹤0.01% |
+369,195
| New | +$1.9M |
|
1809
Fulgent Genetics
FLGT
$549M
| $1.86M | ﹤0.01% |
93,719
+40,615
| +76% | +$792K |
|
1810
Vir Biotechnology
VIR
$1.81B
| $1.86M | ﹤0.01% |
369,615
+97,080
| +36% | +$520K |
|
1811
SM Energy
SM
$8.49B
| $1.85M | ﹤0.01% |
74,863
+25,471
| +52% | +$617K |
|
1812
Kforce
KFRC
$1.03B
| $1.85M | ﹤0.01% |
44,924
-35,425
| -44% | -$1.49M |
|
|
ZEUS
1813
DELISTED
Olympic Steel
ZEUS
| $1.85M | ﹤0.01% |
56,657
-766
| -1% | -$23.9K |
|
1814
Broadridge
BR
$21.1B
| $1.84M | ﹤0.01% |
7,590
+6,748
| +801% | +$1.6M |
|
1815
Stoneridge
SRI
$205M
| $1.84M | ﹤0.01% |
261,827
+55,227
| +27% | +$271K |
|
1816
Antero Midstream
AM
$10.4B
| $1.84M | ﹤0.01% |
97,100
-534,979
| -85% | -$9.56M |
|
1817
Amphastar Pharmaceuticals
AMPH
$935M
| $1.84M | ﹤0.01% |
80,130
+4,802
| +6% | +$119K |
|
1818
Invesco
IVZ
$14.4B
| $1.84M | ﹤0.01% |
116,638
-724,731
| -86% | -$10.4M |
|
|
ALEX
1819
DELISTED
Alexander & Baldwin
ALEX
| $1.83M | ﹤0.01% |
102,831
-2,366
| -2% | -$41.2K |
|
|
BKHA
1820
Black Hawk Acquisition Corp
BKHA
| $1.83M | ﹤0.01% |
172,200
-300
| -0.2% | -$3.18K |
|
1821
F&G Annuities & Life
FG
$3.02B
| $1.83M | ﹤0.01% |
57,129
-29,426
| -34% | -$977K |
|
1822
Flowers Foods
FLO
$1.51B
| $1.82M | ﹤0.01% |
114,136
-36,087
| -24% | -$622K |
|
1823
Allogene Therapeutics
ALLO
$750M
| $1.82M | ﹤0.01% |
1,613,225
-461,874
| -22% | -$614K |
|
|
UYSC
1824
UY Scuti Acquisition Corp
UYSC
| $1.82M | ﹤0.01% |
+181,250
| New | +$1.82M |
|
1825
PUT
PENN Entertainment
PENN
$2.38B
| $1.82M | ﹤0.01% |
101,900
| – | – |
|
Similar funds
John Overdeck's Q2 2025 Portfolio in Review
As of Q2 2025, John Overdeck held 3,681 positions worth $56.5B, up 21% from $46.8B the previous quarter. Its ten largest holdings account for 7.7% of the portfolio.
John Overdeck deployed $2.96B of net new capital in Q2 2025, opening 509 new positions and adding to 1,200 existing holdings. Its largest new stake was iShares Expanded Tech-Software Sector ETF: 3,154,300 shares worth $345M.
By sector, the portfolio is most concentrated in Technology at 17% of assets, down from 18% a quarter earlier, followed by Financials and Healthcare.
On the sell side, the largest reduction was Broadcom, an estimated $338M trimmed.
- John Overdeck's largest Q2 2025 buy was iShares Expanded Tech-Software Sector ETF: 3,154,300 shares worth $345M.
- John Overdeck added most to UnitedHealth in Q2 2025, an estimated $286M increase.
- John Overdeck's biggest Q2 2025 reduction was Broadcom, cutting an estimated $338M.
- John Overdeck fully exited State Street Utilities Select Sector SPDR ETF in Q2 2025, selling an estimated $134M.
- John Overdeck's ten largest holdings make up 7.7% of its $56.5B portfolio in Q2 2025.
- John Overdeck opened 509 new positions and closed 531 in Q2 2025.
- John Overdeck's portfolio value rose 21% quarter-over-quarter to $56.5B.
Based on Two Sigma Investments's 13F filing for Q2 2025, filed 14 Aug 2025.