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 | |
|---|---|---|---|---|---|---|
3001
iShares Russell Top 200 Growth ETF
IWY
$15.7B
| $410K | ﹤0.01% |
1,500
-293,000
| -99% | -$75.8M |
|
3002
Schwab US Large- Cap ETF
SCHX
$73.8B
| $409K | ﹤0.01% |
15,536
-220,200
| -93% | -$5.59M |
|
3003
PUT
Opendoor
OPEN
$3.33B
| $408K | ﹤0.01% |
+52,907
| New | +$215K |
|
3004
CALL
Palo Alto Networks
PANW
$286B
| $407K | ﹤0.01% |
+2,000
| New | +$383K |
|
|
XRLV
3005
DELISTED
Invesco S&P 500 ex-Rate Sensitive Low Volatility ETF
XRLV
| $406K | ﹤0.01% |
+7,311
| New | +$404K |
|
3006
QuickLogic
QUIK
$206M
| $406K | ﹤0.01% |
+67,017
| New | +$396K |
|
3007
PUT
Deckers Outdoor
DECK
$12.5B
| $405K | ﹤0.01% |
+4,000
| New | +$436K |
|
|
RZLV
3008
Rezolve AI
RZLV
$969M
| $404K | ﹤0.01% |
81,143
+26,783
| +49% | +$105K |
|
|
LITS
3009
Lite Strategy Inc
LITS
$35M
| $404K | ﹤0.01% |
+166,761
| New | +$688K |
|
3010
BioLife Solutions
BLFS
$1.82B
| $403K | ﹤0.01% |
+15,800
| New | +$375K |
|
3011
Atomera
ATOM
$176M
| $402K | ﹤0.01% |
90,942
-8,357
| -8% | -$34.3K |
|
|
ADVM
3012
DELISTED
Adverum Biotechnologies
ADVM
| $402K | ﹤0.01% |
88,670
+69,913
| +373% | +$206K |
|
3013
Funko
FNKO
$385M
| $402K | ﹤0.01% |
116,738
-1,363
| -1% | -$5.06K |
|
3014
Artisan Partners
APAM
$3.05B
| $399K | ﹤0.01% |
9,190
+1,311
| +17% | +$60.4K |
|
3015
Winmark
WINA
$1.26B
| $398K | ﹤0.01% |
800
-111
| -12% | -$47.7K |
|
3016
InMode
INMD
$869M
| $398K | ﹤0.01% |
+26,693
| New | +$390K |
|
3017
PUT
Bloom Energy
BE
$60.1B
| $397K | ﹤0.01% |
+4,700
| New | +$218K |
|
|
CVAC
3018
DELISTED
CureVac
CVAC
| $397K | ﹤0.01% |
73,632
| – | – |
|
3019
Tenaris
TS
$27B
| $397K | ﹤0.01% |
11,094
-46,100
| -81% | -$1.67M |
|
3020
RELX
RELX
$63.4B
| $396K | ﹤0.01% |
8,300
| – | – |
|
|
WYFI
3021
WhiteFiber Inc
WYFI
$807M
| $396K | ﹤0.01% |
+14,583
| New | +$285K |
|
3022
LegalZoom.com
LZ
$1.03B
| $395K | ﹤0.01% |
38,080
-171,834
| -82% | -$1.71M |
|
|
AGEN
3023
Agenus
AGEN
$345M
| $394K | ﹤0.01% |
+102,353
| New | +$513K |
|
3024
Clearfield
CLFD
$370M
| $392K | ﹤0.01% |
11,416
+2,155
| +23% | +$80.2K |
|
3025
WSFS Financial
WSFS
$4.06B
| $391K | ﹤0.01% |
7,251
-315
| -4% | -$17.8K |
|
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.