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 | |
|---|---|---|---|---|---|---|
876
First Trust Utilities AlphaDEX Fund
FXU
$805M
| $8.17M | 0.01% |
192,800
+38,600
| +25% | +$1.6M |
|
877
Hartford Financial Services
HIG
$37.6B
| $8.16M | 0.01% |
+64,315
| New | +$7.99M |
|
|
HPE.PRC
878
Hewlett Packard Enterprise 7.625% Series C Preferred Stock
HPE.PRC
$4.01B
| $8.14M | 0.01% |
138,251
+20,051
| +17% | +$1.01M |
|
879
UFP Technologies
UFPT
$2.37B
| $8.12M | 0.01% |
33,237
-18,772
| -36% | -$4.23M |
|
|
KCHVU
880
Kochav Defense Acquisition Corp Units
KCHVU
| $8.11M | 0.01% |
+797,500
| New | +$8.06M |
|
881
BioMarin Pharmaceuticals
BMRN
$12.6B
| $8.11M | 0.01% |
147,596
-611,792
| -81% | -$36M |
|
882
BlackBerry
BB
$4.48B
| $8.11M | 0.01% |
1,770,430
+55,192
| +3% | +$208K |
|
|
IPCX
883
DELISTED
Inflection Point Acquisition Corp III
IPCX
| $8.1M | 0.01% |
+797,500
| New | +$8.14M |
|
884
Bumble
BMBL
$376M
| $8.1M | 0.01% |
1,229,013
+543,143
| +79% | +$2.74M |
|
885
Under Armour
UAA
$2.31B
| $8.08M | 0.01% |
1,183,140
-1,624,291
| -58% | -$10.1M |
|
|
KKR.PRD
886
KKR & Co 6.25% Series D Preferred Stock
KKR.PRD
$2.37B
| $8.08M | 0.01% |
150,731
-879,903
| -85% | -$43.2M |
|
|
OYSEU
887
Oyster Enterprises II Acquisition Corp Units
OYSEU
| $8.07M | 0.01% |
+797,500
| New | +$8.04M |
|
888
Coca-Cola Europacific Partners
CCEP
$48.6B
| $8.04M | 0.01% |
86,746
-553,301
| -86% | -$49.6M |
|
889
Powell Industries
POWL
$6.89B
| $8.03M | 0.01% |
114,438
+102,390
| +850% | +$6.18M |
|
890
Credit Acceptance
CACC
$6.26B
| $8.02M | 0.01% |
15,745
+10,265
| +187% | +$5.04M |
|
891
Lakeland Financial Corp
LKFN
$1.5B
| $8.02M | 0.01% |
130,488
+63,060
| +94% | +$3.66M |
|
892
Glacier Bancorp
GBCI
$6.09B
| $8.02M | 0.01% |
186,129
+82,593
| +80% | +$3.42M |
|
893
Utz Brands
UTZ
$1.26B
| $8.01M | 0.01% |
638,202
+562,309
| +741% | +$7.36M |
|
894
Itaú Unibanco
ITUB
$82.9B
| $8.01M | 0.01% |
1,214,333
+124,218
| +11% | +$757K |
|
895
Scholar Rock
SRRK
$7.09B
| $8M | 0.01% |
225,897
-146,840
| -39% | -$4.61M |
|
896
SharkNinja
SN
$25.8B
| $8M | 0.01% |
80,772
-630
| -0.8% | -$54.5K |
|
897
iShares S&P 500 Value ETF
IVE
$50.3B
| $7.99M | 0.01% |
40,900
-122,900
| -75% | -$22.9M |
|
|
BLUWU
898
Blue Water Acquisition Corp III Unit
BLUWU
| $7.98M | 0.01% |
+797,500
| New | +$7.98M |
|
|
PACHU
899
Pioneer Acquisition I Corp Units
PACHU
| $7.98M | 0.01% |
+797,500
| New | +$7.98M |
|
900
Iovance Biotherapeutics
IOVA
$3.65B
| $7.97M | 0.01% |
4,633,451
+4,236,457
| +1,067% | +$10.5M |
|
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.