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 | |
|---|---|---|---|---|---|---|
101
iShares S&P 500 Growth ETF
IVW
$75.9B
| $140M | 0.25% |
1,267,831
+581,600
| +85% | +$57.6M |
|
102
Goldman Sachs
GS
$303B
| $137M | 0.24% |
192,961
+190,368
| +7,342% | +$110M |
|
103
Intercontinental Exchange
ICE
$90.5B
| $132M | 0.23% |
721,204
-517,798
| -42% | -$89M |
|
104
Agree Realty
ADC
$9.19B
| $132M | 0.23% |
1,807,573
+310,150
| +21% | +$23.3M |
|
105
Cadence Design Systems
CDNS
$87.9B
| $130M | 0.23% |
423,183
+397,263
| +1,533% | +$116M |
|
106
Cheniere Energy
LNG
$57.3B
| $129M | 0.23% |
530,966
-539,836
| -50% | -$125M |
|
107
Cboe Global Markets
CBOE
$31.4B
| $128M | 0.23% |
550,125
+23,225
| +4% | +$5.17M |
|
108
Lyft
LYFT
$6.61B
| $128M | 0.23% |
8,114,224
+4,313,412
| +113% | +$60.4M |
|
109
West Pharmaceutical
WST
$24.8B
| $128M | 0.23% |
584,065
+61,238
| +12% | +$13.1M |
|
110
Ferrari
RACE
$76.7B
| $127M | 0.22% |
258,425
+113,725
| +79% | +$52.8M |
|
111
Snap
SNAP
$8.86B
| $126M | 0.22% |
14,492,875
+9,160,236
| +172% | +$76M |
|
112
AerCap
AER
$23B
| $124M | 0.22% |
1,058,485
+307,263
| +41% | +$33.2M |
|
113
Five Below
FIVE
$13.8B
| $124M | 0.22% |
943,997
+312,453
| +49% | +$30.4M |
|
114
Deckers Outdoor
DECK
$12.5B
| $123M | 0.22% |
1,197,532
+1,178,432
| +6,170% | +$130M |
|
115
Martin Marietta Materials
MLM
$32.1B
| $119M | 0.21% |
217,342
-98,204
| -31% | -$51.9M |
|
116
Canadian National Railway
CNI
$78.5B
| $118M | 0.21% |
1,136,881
+633,063
| +126% | +$64.4M |
|
117
Elevance Health
ELV
$86.9B
| $118M | 0.21% |
302,659
+275,096
| +998% | +$111M |
|
|
TLN
118
Talen Energy Corp
TLN
$15.1B
| $118M | 0.21% |
404,294
+392,493
| +3,326% | +$93.1M |
|
119
Chewy
CHWY
$9.83B
| $117M | 0.21% |
2,755,678
+2,307,813
| +515% | +$91.9M |
|
120
Elastic
ESTC
$8.93B
| $117M | 0.21% |
1,382,375
+853,181
| +161% | +$72.1M |
|
121
Allstate
ALL
$64.2B
| $115M | 0.2% |
573,013
+423,969
| +284% | +$84.6M |
|
|
NEE.PRR
122
DELISTED
NextEra Energy, Inc. 6.926% Corporate Units
NEE.PRR
| $115M | 0.2% |
2,888,912
+507,673
| +21% | +$20.3M |
|
123
American Electric Power
AEP
$65.8B
| $115M | 0.2% |
1,105,511
+83,030
| +8% | +$8.64M |
|
124
Insulet
PODD
$10.3B
| $114M | 0.2% |
363,432
+346,951
| +2,105% | +$100M |
|
125
Antero Resources
AR
$11.7B
| $113M | 0.2% |
2,815,071
+1,161,814
| +70% | +$44M |
|
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.