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 | |
|---|---|---|---|---|---|---|
3051
Ascent Industries
ACNT
$134M
| $366K | ﹤0.01% |
+28,411
| New | +$358K |
|
3052
Tucows
TCX
$104M
| $364K | ﹤0.01% |
19,635
+8,717
| +80% | +$169K |
|
|
QVCGA
3053
DELISTED
QVC Group Inc Series A
QVCGA
| $364K | ﹤0.01% |
27,000
-50,177
| -65% | -$327K |
|
3054
Skye Bioscience
SKYE
$9.61M
| $363K | ﹤0.01% |
11,540
+3,646
| +46% | +$110K |
|
3055
Corsair Gaming
CRSR
$1.18B
| $362K | ﹤0.01% |
40,557
-6,500
| -14% | -$58.5K |
|
3056
iRhythm Holdings
IRTC
$4.13B
| $361K | ﹤0.01% |
2,100
+200
| +11% | +$31.8K |
|
3057
CALL
Oscar Health
OSCR
$9.82B
| $360K | ﹤0.01% |
+19,000
| New | +$313K |
|
3058
Aemetis
AMTX
$136M
| $360K | ﹤0.01% |
159,849
-57,023
| -26% | -$151K |
|
3059
Superior Group of Companies
SGC
$203M
| $358K | ﹤0.01% |
33,421
+8,412
| +34% | +$96.4K |
|
3060
Climb Global Solutions
CLMB
$512M
| $358K | ﹤0.01% |
10,616
-70,044
| -87% | -$2.08M |
|
3061
ALPS Dynamic US Dividend Advantage ETF
RFDA
$83.1M
| $358K | ﹤0.01% |
5,680
-2,146
| -27% | -$130K |
|
3062
Epsilon Energy
EPSN
$170M
| $356K | ﹤0.01% |
70,692
+58,526
| +481% | +$355K |
|
3063
Neurogene
NGNE
$793M
| $356K | ﹤0.01% |
20,551
+54
| +0.3% | +$1.08K |
|
3064
Vanguard Morningstar Small-Cap ETF
VB
$81.9B
| $356K | ﹤0.01% |
+1,400
| New | +$347K |
|
3065
Microvision
MVIS
$52M
| $355K | ﹤0.01% |
19,085
-4,224
| -18% | -$75.5K |
|
3066
Cullinan Oncology
CGEM
$1.4B
| $354K | ﹤0.01% |
+59,672
| New | +$437K |
|
3067
Perion Network
PERI
$385M
| $354K | ﹤0.01% |
36,858
-52,111
| -59% | -$522K |
|
3068
Woori Financial
WF
$16.9B
| $353K | ﹤0.01% |
6,294
-6,164
| -49% | -$336K |
|
3069
J. Jill
JILL
$299M
| $352K | ﹤0.01% |
20,513
-6,364
| -24% | -$105K |
|
3070
Sagimet Biosciences
SGMT
$635M
| $351K | ﹤0.01% |
51,191
+38,146
| +292% | +$309K |
|
3071
Relmada Therapeutics
RLMD
$489M
| $349K | ﹤0.01% |
173,614
+78,197
| +82% | +$75K |
|
3072
Corporacion America
CAAP
$3.9B
| $349K | ﹤0.01% |
+19,250
| New | +$388K |
|
3073
AirSculpt Technologies
AIRS
$190M
| $348K | ﹤0.01% |
43,333
+28,792
| +198% | +$178K |
|
3074
First Trust Horizon Managed Volatility Domestic ETF
HUSV
$84.6M
| $347K | ﹤0.01% |
8,700
-2,800
| -24% | -$111K |
|
3075
InvenTrust Properties
IVT
$2.56B
| $346K | ﹤0.01% |
12,098
+4,720
| +64% | +$134K |
|
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.