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 | |
|---|---|---|---|---|---|---|
551
CMS Energy
CMS
$21.4B
| $18.4M | 0.03% |
266,074
-33,115
| -11% | -$2.36M |
|
|
NEE.PRS
552
NextEra Energy 7.299% Corporate Units
NEE.PRS
$2.09B
| $18.4M | 0.03% |
390,744
+202,688
| +108% | +$9.63M |
|
553
Tenable Holdings
TENB
$3.79B
| $18.4M | 0.03% |
544,665
+271,111
| +99% | +$8.8M |
|
|
DVAX
554
DELISTED
Dynavax Technologies
DVAX
| $18.4M | 0.03% |
1,854,407
+538,344
| +41% | +$5.67M |
|
555
CAE Inc
CAE
$8.02B
| $18.3M | 0.03% |
625,550
+175,700
| +39% | +$4.43M |
|
556
Infosys
INFY
$48.4B
| $18.1M | 0.03% |
979,165
-2,721,048
| -74% | -$48.6M |
|
557
FirstCash
FCFS
$9.77B
| $17.9M | 0.03% |
132,756
+45,951
| +53% | +$5.88M |
|
558
Zions Bancorporation
ZION
$9.95B
| $17.9M | 0.03% |
344,111
+63,286
| +23% | +$2.97M |
|
|
GTM
559
ZoomInfo Technologies
GTM
$1.16B
| $17.8M | 0.03% |
1,757,247
-1,324,937
| -43% | -$12.3M |
|
560
IAMGOLD
IAG
$12.1B
| $17.8M | 0.03% |
2,417,889
-3,048,838
| -56% | -$21.4M |
|
561
Tradeweb Markets
TW
$22.6B
| $17.7M | 0.03% |
121,057
-777
| -0.6% | -$108K |
|
562
Lincoln National
LNC
$8.07B
| $17.7M | 0.03% |
511,356
-399,032
| -44% | -$13.1M |
|
563
Credicorp
BAP
$30.1B
| $17.7M | 0.03% |
79,045
+9,073
| +13% | +$1.84M |
|
564
Vanguard Communication Services ETF
VOX
$5.8B
| $17.6M | 0.03% |
+103,193
| New | +$15.9M |
|
565
Chemed
CHE
$7.07B
| $17.5M | 0.03% |
36,029
+32,312
| +869% | +$18.4M |
|
566
AST SpaceMobile
ASTS
$20.6B
| $17.4M | 0.03% |
371,665
+320,437
| +626% | +$9.28M |
|
567
PUT
Live Nation Entertainment
LYV
$42.4B
| $17.1M | 0.03% |
113,100
| – | – |
|
568
DexCom
DXCM
$34.8B
| $17M | 0.03% |
194,787
-421,802
| -68% | -$33.1M |
|
569
Xtrackers S&P 500 ESG ETF
SNPE
$2.93B
| $17M | 0.03% |
307,200
+196,900
| +179% | +$10.1M |
|
570
monday.com
MNDY
$3.84B
| $16.9M | 0.03% |
53,600
+11,136
| +26% | +$3.1M |
|
571
Manhattan Associates
MANH
$12.5B
| $16.8M | 0.03% |
85,287
-141,812
| -62% | -$25.7M |
|
572
AES
AES
$10.5B
| $16.8M | 0.03% |
1,600,377
-3,232,404
| -67% | -$34.6M |
|
573
Ingredion
INGR
$6.74B
| $16.8M | 0.03% |
124,132
+100,321
| +421% | +$13.5M |
|
574
Robert Half
RHI
$4.58B
| $16.8M | 0.03% |
408,887
+50,617
| +14% | +$2.31M |
|
575
Capital Southwest
CSWC
$1.59B
| $16.8M | 0.03% |
761,221
-37,279
| -5% | -$768K |
|
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.