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 | |
|---|---|---|---|---|---|---|
|
OBAWU
976
Oxley Bridge Acquisition Ltd Unit
OBAWU
| $6.92M | 0.01% |
+691,364
| New | +$6.92M |
|
977
Green Plains
GPRE
$1.05B
| $6.92M | 0.01% |
1,147,348
+593,436
| +107% | +$2.62M |
|
|
SARO
978
StandardAero Inc
SARO
$8.13B
| $6.9M | 0.01% |
217,905
+130,326
| +149% | +$3.66M |
|
|
LWACU
979
LightWave Acquisition Corp Units
LWACU
| $6.84M | 0.01% |
+679,687
| New | +$6.83M |
|
980
STAAR Surgical
STAA
$1.17B
| $6.84M | 0.01% |
407,381
+318,977
| +361% | +$5.62M |
|
|
BRR
981
ProCap Financial Inc
BRR
$190M
| $6.83M | 0.01% |
+643,340
| New | +$7.63M |
|
982
Woodward
WWD
$19.7B
| $6.83M | 0.01% |
27,848
+8,778
| +46% | +$1.8M |
|
983
NorthWestern Energy
NWE
$4.29B
| $6.82M | 0.01% |
132,951
+17,063
| +15% | +$943K |
|
|
ARIS
984
Aris Mining
ARIS
$4.3B
| $6.78M | 0.01% |
1,009,119
+882,978
| +700% | +$5.24M |
|
985
Minerals Technologies
MTX
$2.24B
| $6.74M | 0.01% |
122,433
+59,368
| +94% | +$3.35M |
|
|
RTAC
986
Renatus Tactical Acquisition Corp I
RTAC
$326M
| $6.74M | 0.01% |
+570,937
| New | +$6.56M |
|
987
Vistra
VST
$45.5B
| $6.73M | 0.01% |
34,712
-26,106
| -43% | -$3.86M |
|
988
B&G Foods
BGS
$284M
| $6.73M | 0.01% |
1,590,047
+339,956
| +27% | +$1.78M |
|
989
e.l.f. Beauty
ELF
$6.25B
| $6.72M | 0.01% |
+53,989
| New | +$4.61M |
|
990
QCR Holdings
QCRH
$1.65B
| $6.71M | 0.01% |
98,845
+42,814
| +76% | +$2.86M |
|
991
OceanFirst Financial
OCFC
$1.83B
| $6.69M | 0.01% |
380,130
+45,441
| +14% | +$758K |
|
|
NXH
992
Neighborhood Intelligence Inc
NXH
$372M
| $6.69M | 0.01% |
1,069,467
+452,426
| +73% | +$2.19M |
|
|
XRPN
993
Armada Acquisition Corp II
XRPN
$333M
| $6.68M | 0.01% |
+664,583
| New | +$6.67M |
|
994
Innoviva
INVA
$1.52B
| $6.67M | 0.01% |
331,886
-335,699
| -50% | -$6.46M |
|
995
Sylvamo
SLVM
$1.47B
| $6.66M | 0.01% |
133,003
+21,862
| +20% | +$1.23M |
|
996
Trustmark
TRMK
$2.7B
| $6.65M | 0.01% |
182,444
+171,584
| +1,580% | +$5.87M |
|
997
Vermilion Energy
VET
$1.92B
| $6.65M | 0.01% |
913,235
-515,178
| -36% | -$3.52M |
|
998
Floor & Decor
FND
$5.84B
| $6.63M | 0.01% |
87,304
-170,609
| -66% | -$12.7M |
|
|
ORLA
999
DELISTED
Orla Mining
ORLA
| $6.63M | 0.01% |
661,649
+268,381
| +68% | +$2.79M |
|
1000
Hackett Group
HCKT
$276M
| $6.61M | 0.01% |
260,054
+83,894
| +48% | +$2.14M |
|
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.