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 | |
|---|---|---|---|---|---|---|
3251
Alpha Teknova
TKNO
$394M
| $229K | ﹤0.01% |
36,997
-33,501
| -48% | -$157K |
|
3252
CALL
Walt Disney
DIS
$191B
| $229K | ﹤0.01% |
+2,000
| New | +$236K |
|
|
3253
PUT
Walt Disney
DIS
$191B
| $229K | ﹤0.01% |
+2,000
| New | +$236K |
|
3254
SmartRent
SMRT
$268M
| $229K | ﹤0.01% |
162,105
+125,772
| +346% | +$161K |
|
3255
nLIGHT
LASR
$2.54B
| $229K | ﹤0.01% |
+7,712
| New | +$191K |
|
3256
Virco
VIRC
$94.2M
| $228K | ﹤0.01% |
29,481
+8,628
| +41% | +$70.3K |
|
3257
Tredegar Corp
TG
$278M
| $227K | ﹤0.01% |
28,207
-15,295
| -35% | -$126K |
|
|
CLYM
3258
Climb Bio
CLYM
$942M
| $226K | ﹤0.01% |
112,681
-66,910
| -37% | -$124K |
|
3259
Citizens Community Bancorp
CZWI
$201M
| $225K | ﹤0.01% |
+14,024
| New | +$220K |
|
3260
Protolabs
PRLB
$1.84B
| $225K | ﹤0.01% |
4,500
-1,100
| -20% | -$50.4K |
|
3261
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$271M
| $225K | ﹤0.01% |
+3,300
| New | +$221K |
|
3262
CALL
American Electric Power
AEP
$66.4B
| $225K | ﹤0.01% |
+2,000
| New | +$219K |
|
|
AMBQ
3263
Ambiq Micro
AMBQ
$1.37B
| $223K | ﹤0.01% |
+7,466
| New | +$272K |
|
3264
CALL
SolarEdge
SEDG
$1.85B
| $222K | ﹤0.01% |
+6,000
| New | +$179K |
|
3265
Franklin Financial Services
FRAF
$278M
| $221K | ﹤0.01% |
+4,808
| New | +$208K |
|
3266
Clarus
CLAR
$146M
| $221K | ﹤0.01% |
+63,154
| New | +$228K |
|
3267
Greene County Bancorp
GCBC
$601M
| $221K | ﹤0.01% |
+9,762
| New | +$234K |
|
|
RHLD
3268
Resolute Holdings Management
RHLD
$1.01B
| $220K | ﹤0.01% |
+3,055
| New | +$165K |
|
|
ORIO
3269
Orion Digital Corp
ORIO
$20.8M
| $220K | ﹤0.01% |
+121,379
| New | +$222K |
|
3270
Prelude Therapeutics
PRLD
$516M
| $219K | ﹤0.01% |
152,233
-2,744
| -2% | -$2.75K |
|
3271
OneWater Marine
ONEW
$200M
| $219K | ﹤0.01% |
+13,800
| New | +$218K |
|
|
TEAD
3272
Teads Holding Co
TEAD
$59.8M
| $218K | ﹤0.01% |
132,120
+102,298
| +343% | +$217K |
|
3273
PUT
HP
HPQ
$26.1B
| $218K | ﹤0.01% |
+8,000
| New | +$213K |
|
3274
Taysha Gene Therapies
TSHA
$1.95B
| $216K | ﹤0.01% |
66,105
+33,423
| +102% | +$94.6K |
|
3275
CALL
Energy Fuels
UUUU
$3.72B
| $215K | ﹤0.01% |
+14,000
| New | +$149K |
|
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.