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 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$474M |
| 2 |
State Street Consumer Staples Select Sector SPDR ETF
XLP
|
+$357M |
| 3 |
Accenture
ACN
|
+$246M |
| 4 |
Advanced Micro Devices
AMD
|
+$235M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$231M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$381M |
| 2 |
State Street Technology Select Sector SPDR ETF
XLK
|
+$375M |
| 3 |
iShares Expanded Tech-Software Sector ETF
IGV
|
+$348M |
| 4 |
Thermo Fisher Scientific
TMO
|
+$292M |
| 5 |
Snowflake
SNOW
|
+$258M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 16.18% |
| 2 | Financials | 15.54% |
| 3 | Industrials | 10.5% |
| 4 | Healthcare | 9.8% |
| 5 | Consumer Discretionary | 8.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3101
Pearson
PSO
$10B
| $329K | ﹤0.01% |
23,212
-142,931
| -86% | -$2.06M |
|
|
SLN
3102
Silence Therapeutics
SLN
$826M
| $328K | ﹤0.01% |
63,247
+3,935
| +7% | +$21.9K |
|
|
ASRT
3103
DELISTED
Assertio
ASRT
| $327K | ﹤0.01% |
24,762
-4,263
| -15% | -$49.6K |
|
3104
Kulicke & Soffa
KLIC
$4.37B
| $327K | ﹤0.01% |
8,042
-23,728
| -75% | -$879K |
|
3105
MVB Financial
MVBF
$392M
| $327K | ﹤0.01% |
+13,030
| New | +$310K |
|
3106
Ranger Energy Services
RNGR
$375M
| $325K | ﹤0.01% |
23,132
-15,203
| -40% | -$200K |
|
3107
CALL
Philip Morris
PM
$298B
| $324K | ﹤0.01% |
+2,000
| New | +$336K |
|
|
3108
CALL
Advanced Micro Devices
AMD
$746B
| $324K | ﹤0.01% |
+2,000
| New | +$323K |
|
3109
BellRing Brands
BRBR
$1.26B
| $324K | ﹤0.01% |
8,900
-4,100
| -32% | -$185K |
|
|
MRCC
3110
DELISTED
Monroe Capital Corp
MRCC
| $323K | ﹤0.01% |
46,033
-24,335
| -35% | -$167K |
|
3111
RLX Technology
RLX
$2.21B
| $323K | ﹤0.01% |
+122,800
| New | +$292K |
|
|
CMBM
3112
DELISTED
Cambium Networks
CMBM
| $323K | ﹤0.01% |
361,088
-21,505
| -6% | -$16.5K |
|
3113
DNOW Inc
DNOW
$2.8B
| $322K | ﹤0.01% |
21,100
-31
| -0.1% | -$468 |
|
3114
Selective Insurance
SIGI
$5.52B
| $322K | ﹤0.01% |
3,968
-48,994
| -93% | -$3.95M |
|
3115
Goosehead Insurance
GSHD
$2.59B
| $320K | ﹤0.01% |
4,300
-8,000
| -65% | -$705K |
|
3116
Invesco Next Gen Media and Gaming ETF
GGME
$44.6M
| $315K | ﹤0.01% |
4,900
-3,700
| -43% | -$232K |
|
3117
Fortress Biotech
FBIO
$97.7M
| $314K | ﹤0.01% |
84,981
+39,149
| +85% | +$99K |
|
3118
CALL
Chipotle Mexican Grill
CMG
$48.1B
| $314K | ﹤0.01% |
+8,000
| New | +$360K |
|
3119
Riley Exploration Permian
REPX
$833M
| $312K | ﹤0.01% |
11,499
-16,586
| -59% | -$453K |
|
|
OMSE
3120
OMS Energy Technologies
OMSE
$190M
| $310K | ﹤0.01% |
+73,058
| New | +$461K |
|
3121
Brilliant Earth
BRLT
$22.5M
| $308K | ﹤0.01% |
+148,615
| New | +$300K |
|
3122
Inspired Entertainment
INSE
$159M
| $308K | ﹤0.01% |
+32,785
| New | +$296K |
|
3123
PUT
IonQ
IONQ
$16.6B
| $308K | ﹤0.01% |
+5,000
| New | +$235K |
|
3124
Blink Charging
BLNK
$84.7M
| $306K | ﹤0.01% |
186,644
+59,292
| +47% | +$65.9K |
|
3125
Cardlytics
CDLX
$25.2M
| $306K | ﹤0.01% |
12,594
+3,890
| +45% | +$64.8K |
|
Similar funds
John Overdeck's Q3 2025 Portfolio in Review
As of Q3 2025, John Overdeck held 4,027 positions worth $67.2B, up 19% from $56.5B the previous quarter. Its ten largest holdings account for 6.2% of the portfolio.
John Overdeck deployed $4.46B of net new capital in Q3 2025, opening 877 new positions and adding to 1,461 existing holdings. Its largest new stake was Berkshire Hathaway Class B: 379,096 shares worth $191M.
By sector, the portfolio is most concentrated in Technology at 16% of assets, down from 17% a quarter earlier, followed by Financials and Industrials.
On the sell side, the largest reduction was Invesco QQQ Trust, an estimated $381M trimmed.
- John Overdeck's largest Q3 2025 buy was Berkshire Hathaway Class B: 379,096 shares worth $191M.
- John Overdeck added most to State Street Financial Select Sector SPDR ETF in Q3 2025, an estimated $474M increase.
- John Overdeck's biggest Q3 2025 reduction was Invesco QQQ Trust, cutting an estimated $381M.
- John Overdeck fully exited NextEra Energy, Inc. 6.926% Corporate Units in Q3 2025, selling an estimated $115M.
- John Overdeck's ten largest holdings make up 6.2% of its $67.2B portfolio in Q3 2025.
- John Overdeck opened 877 new positions and closed 399 in Q3 2025.
- John Overdeck's portfolio value rose 19% quarter-over-quarter to $67.2B.
Based on Two Sigma Investments's 13F filing for Q3 2025, filed 14 Nov 2025.