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 | |
|---|---|---|---|---|---|---|
1626
Harbor Long-Term Growers ETF
WINN
$1.17B
| $3.7M | 0.01% |
118,900
| – | – |
|
1627
PUT
Costco
COST
$431B
| $3.7M | 0.01% |
+4,000
| New | +$3.83M |
|
1628
Walt Disney
DIS
$191B
| $3.7M | 0.01% |
32,300
-3,400
| -10% | -$400K |
|
1629
Equifax
EFX
$22.9B
| $3.69M | 0.01% |
14,398
-213,821
| -94% | -$53.7M |
|
1630
Expeditors International
EXPD
$24.4B
| $3.69M | 0.01% |
30,086
+13,364
| +80% | +$1.59M |
|
1631
Kinross Gold
KGC
$39.1B
| $3.68M | 0.01% |
148,074
-5,028,923
| -97% | -$96.7M |
|
1632
NIO
NIO
$10.9B
| $3.66M | 0.01% |
+480,300
| New | +$2.59M |
|
1633
Tencent Music
TME
$14.2B
| $3.66M | 0.01% |
+156,700
| New | +$3.63M |
|
1634
PUT
Oracle
ORCL
$410B
| $3.66M | 0.01% |
+13,000
| New | +$3.31M |
|
|
CRON
1635
Cronos Group
CRON
$1.26B
| $3.64M | 0.01% |
1,310,386
+912,773
| +230% | +$2.15M |
|
1636
Concentrix
CNXC
$1.59B
| $3.64M | 0.01% |
78,845
+120
| +0.2% | +$6.4K |
|
1637
Encore Capital Group
ECPG
$2.19B
| $3.63M | 0.01% |
87,066
+52,220
| +150% | +$2.14M |
|
|
AVBC
1638
Avidia Bancorp
AVBC
$407M
| $3.63M | 0.01% |
+243,218
| New | +$3.68M |
|
1639
NB Bancorp
NBBK
$986M
| $3.63M | 0.01% |
205,869
+64,635
| +46% | +$1.19M |
|
1640
Fiverr
FVRR
$337M
| $3.63M | 0.01% |
148,818
-330,598
| -69% | -$8.1M |
|
1641
TriCo Bancshares
TCBK
$1.74B
| $3.63M | 0.01% |
81,784
+9,845
| +14% | +$428K |
|
1642
Axcelis
ACLS
$3.81B
| $3.63M | 0.01% |
37,165
+1,272
| +4% | +$102K |
|
1643
Zillow
ZG
$8.53B
| $3.63M | 0.01% |
48,701
+20,201
| +71% | +$1.59M |
|
1644
BK Technologies
BKTI
$285M
| $3.62M | 0.01% |
42,887
+27,298
| +175% | +$1.56M |
|
|
1645
Snowflake
SNOW
$112B
| $3.62M | 0.01% |
16,050
-1,200,989
| -99% | -$258M |
|
|
SPEG
1646
Silver Pegasus Acquisition Corp
SPEG
$159M
| $3.61M | 0.01% |
+362,500
| New | +$3.61M |
|
1647
Progyny
PGNY
$1.95B
| $3.6M | 0.01% |
167,357
-2,335
| -1% | -$53.1K |
|
1648
PUT
Netflix
NFLX
$333B
| $3.6M | 0.01% |
+30,000
| New | +$3.66M |
|
1649
SandRidge Energy
SD
$519M
| $3.59M | 0.01% |
318,337
+33,751
| +12% | +$373K |
|
1650
Check Point Software Technologies
CHKP
$13.3B
| $3.59M | 0.01% |
17,353
-148,097
| -90% | -$29.8M |
|
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.