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 | |
|---|---|---|---|---|---|---|
|
FTW
926
Presidio Production Co
FTW
$357M
| $7.72M | 0.01% |
734,524
-70,338
| -9% | -$726K |
|
927
State Street SPDR S&P 500 ESG ETF
EFIV
$1.03B
| $7.62M | 0.01% |
130,200
+75,500
| +138% | +$4.09M |
|
928
The GEO Group
GEO
$4.24B
| $7.62M | 0.01% |
317,973
+51,557
| +19% | +$1.41M |
|
929
Veeco
VECO
$2.86B
| $7.59M | 0.01% |
373,724
-43,966
| -11% | -$868K |
|
930
Trinity Capital Inc
TRIN
$1.76B
| $7.56M | 0.01% |
537,558
-408,348
| -43% | -$5.9M |
|
931
Harmony Biosciences
HRMY
$2.24B
| $7.55M | 0.01% |
238,888
-106,919
| -31% | -$3.44M |
|
932
Parsons
PSN
$5.21B
| $7.54M | 0.01% |
105,038
-285,813
| -73% | -$18.9M |
|
|
ITIC
933
Investors Title Co
ITIC
$562M
| $7.53M | 0.01% |
35,630
+25,421
| +249% | +$5.7M |
|
934
Teradata
TDC
$2.56B
| $7.52M | 0.01% |
336,898
-178,057
| -35% | -$3.87M |
|
935
Ingles Markets
IMKTA
$1.62B
| $7.49M | 0.01% |
118,107
+10,872
| +10% | +$676K |
|
|
DRDB
936
Roman DBDR Acquisition Corp II
DRDB
$326M
| $7.47M | 0.01% |
725,000
| – | – |
|
937
Shinhan Financial Group
SHG
$35.2B
| $7.47M | 0.01% |
165,425
-97,638
| -37% | -$3.72M |
|
938
First Commonwealth Financial
FCF
$2.12B
| $7.47M | 0.01% |
460,488
+189,231
| +70% | +$2.92M |
|
939
Universal Insurance Holdings
UVE
$1.21B
| $7.46M | 0.01% |
268,914
+43,231
| +19% | +$1.1M |
|
|
JENA.U
940
Jena Acquisition Corp II Units
JENA.U
| $7.45M | 0.01% |
+725,000
| New | +$7.44M |
|
941
Tootsie Roll Industries
TR
$3.11B
| $7.45M | 0.01% |
229,293
+49,971
| +28% | +$1.6M |
|
|
ATII
942
Archimedes Tech SPAC Partners II Co
ATII
$315M
| $7.42M | 0.01% |
+725,000
| New | +$7.31M |
|
943
Digital Turbine
APPS
$1.3B
| $7.4M | 0.01% |
1,253,686
-438,134
| -26% | -$1.8M |
|
|
RAC
944
Rithm Acquisition Corp
RAC
$310M
| $7.39M | 0.01% |
+725,000
| New | +$7.3M |
|
945
United Airlines
UAL
$36.9B
| $7.38M | 0.01% |
92,729
-529,584
| -85% | -$39M |
|
946
Hexcel
HXL
$7B
| $7.38M | 0.01% |
130,641
-311,366
| -70% | -$16.5M |
|
947
Brookfield Infrastructure Partners
BIP
$17.7B
| $7.37M | 0.01% |
220,030
+41,297
| +23% | +$1.3M |
|
948
First Interstate BancSystem
FIBK
$3.55B
| $7.36M | 0.01% |
255,486
+128,916
| +102% | +$3.47M |
|
|
FERA
949
Fifth Era Acquisition Corp I
FERA
$330M
| $7.36M | 0.01% |
+725,000
| New | +$7.28M |
|
|
AACB
950
DELISTED
Artius II Acquisition Inc
AACB
| $7.34M | 0.01% |
+725,000
| New | +$7.26M |
|
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.