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 | |
|---|---|---|---|---|---|---|
1151
Huntsman Corp
HUN
$1.68B
| $5.14M | 0.01% |
492,912
-882,773
| -64% | -$10.8M |
|
1152
Weibo
WB
$1.72B
| $5.12M | 0.01% |
537,739
-573,548
| -52% | -$5.04M |
|
|
PLMK
1153
Plum Acquisition Corp IV
PLMK
$114M
| $5.12M | 0.01% |
498,437
| – | – |
|
1154
Watts Water Technologies
WTS
$12.4B
| $5.11M | 0.01% |
20,777
+120
| +0.6% | +$27K |
|
1155
First Hawaiian
FHB
$3.17B
| $5.11M | 0.01% |
204,597
+156,803
| +328% | +$3.68M |
|
1156
Nu Skin
NUS
$232M
| $5.1M | 0.01% |
638,688
+840
| +0.1% | +$5.9K |
|
1157
Horace Mann Educators
HMN
$2.07B
| $5.1M | 0.01% |
118,722
-35,244
| -23% | -$1.48M |
|
1158
Analog Devices
ADI
$181B
| $5.09M | 0.01% |
21,377
+3,452
| +19% | +$719K |
|
1159
D-Wave Quantum Inc
QBTS
$6.96B
| $5.08M | 0.01% |
347,282
-2,594,150
| -88% | -$30.5M |
|
1160
IHS Holding
IHS
$2.81B
| $5.08M | 0.01% |
912,990
+497,216
| +120% | +$2.68M |
|
1161
Gold Fields
GFI
$42.3B
| $5.06M | 0.01% |
213,691
+145,400
| +213% | +$3.34M |
|
1162
Vanguard US Momentum Factor ETF
VFMO
$1.88B
| $5.05M | 0.01% |
+29,300
| New | +$4.62M |
|
1163
Celsius Holdings
CELH
$8.86B
| $5.05M | 0.01% |
108,924
-1,571,352
| -94% | -$60.5M |
|
1164
Alpha and Omega Semiconductor
AOSL
$783M
| $5.05M | 0.01% |
196,904
+126,715
| +181% | +$2.75M |
|
|
VZLA
1165
Vizsla Silver
VZLA
$1.38B
| $5.03M | 0.01% |
1,710,914
+1,010,971
| +144% | +$2.63M |
|
1166
Apogee Therapeutics
APGE
$10.2B
| $5.02M | 0.01% |
115,694
-136,441
| -54% | -$5.19M |
|
|
HDRN
1167
Hadron Energy
HDRN
$134M
| $5.02M | 0.01% |
483,905
| – | – |
|
1168
Preformed Line Products
PLPC
$1.99B
| $5.02M | 0.01% |
31,415
+20,231
| +181% | +$2.88M |
|
1169
Compass
COMP
$8.87B
| $5M | 0.01% |
795,763
+566,502
| +247% | +$3.88M |
|
1170
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$137M
| $4.99M | 0.01% |
103,951
+33,407
| +47% | +$1.97M |
|
1171
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$32.9B
| $4.99M | 0.01% |
+45,555
| New | +$4.89M |
|
1172
FIGS
FIGS
$2.53B
| $4.98M | 0.01% |
882,163
+113,126
| +15% | +$522K |
|
|
SMA
1173
SmartStop Self Storage REIT
SMA
$1.87B
| $4.96M | 0.01% |
+137,004
| New | +$4.83M |
|
1174
Andersons Inc
ANDE
$2.23B
| $4.95M | 0.01% |
134,679
+123,029
| +1,056% | +$4.51M |
|
1175
XP
XP
$8.66B
| $4.94M | 0.01% |
+244,523
| New | +$4.23M |
|
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.