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 | |
|---|---|---|---|---|---|---|
1726
Empire State Realty Trust
ESRT
$819M
| $3.22M | ﹤0.01% |
420,887
+154,651
| +58% | +$1.18M |
|
1727
Danaos Corp
DAC
$2.74B
| $3.21M | ﹤0.01% |
35,749
-9,748
| -21% | -$899K |
|
|
GES
1728
PUT
DELISTED
Guess Inc
GES
| $3.21M | ﹤0.01% |
192,100
| – | – |
|
1729
Harmony Gold Mining
HMY
$14.3B
| $3.21M | ﹤0.01% |
176,801
-103,932
| -37% | -$1.57M |
|
1730
PubMatic
PUBM
$745M
| $3.19M | ﹤0.01% |
384,905
+228,878
| +147% | +$2.33M |
|
|
WLAC
1731
DELISTED
Willow Lane Acquisition Corp
WLAC
| $3.18M | ﹤0.01% |
275,000
| – | – |
|
1732
Backblaze
BLZE
$963M
| $3.18M | ﹤0.01% |
342,323
+210,806
| +160% | +$1.55M |
|
1733
Paysign
PAYS
$771M
| $3.18M | ﹤0.01% |
504,887
+294,041
| +139% | +$1.88M |
|
1734
SI-BONE Inc
SIBN
$873M
| $3.17M | ﹤0.01% |
215,471
+29,304
| +16% | +$478K |
|
1735
Aehr Test Systems
AEHR
$3.15B
| $3.17M | ﹤0.01% |
+105,327
| New | +$2.28M |
|
1736
Vipshop
VIPS
$6.88B
| $3.17M | ﹤0.01% |
+161,400
| New | +$2.68M |
|
1737
PUT
Intel
INTC
$461B
| $3.17M | ﹤0.01% |
+94,400
| New | +$2.29M |
|
1738
Lindblad Expeditions
LIND
$2.09B
| $3.16M | ﹤0.01% |
247,138
+43,314
| +21% | +$570K |
|
1739
SES AI
SES
$200M
| $3.16M | ﹤0.01% |
1,891,079
+1,223,673
| +183% | +$1.46M |
|
|
VRE
1740
DELISTED
Veris Residential
VRE
| $3.15M | ﹤0.01% |
207,502
-174,208
| -46% | -$2.59M |
|
1741
State Street SPDR US Large Cap Low Volatility Index ETF
LGLV
$1.24B
| $3.15M | ﹤0.01% |
17,700
-3,710
| -17% | -$653K |
|
1742
Cencora
COR
$61.8B
| $3.15M | ﹤0.01% |
10,070
-660,718
| -98% | -$194M |
|
1743
MarineMax
HZO
$1.15B
| $3.13M | ﹤0.01% |
+123,602
| New | +$3.15M |
|
1744
Ventas
VTR
$47.9B
| $3.13M | ﹤0.01% |
+44,689
| New | +$3M |
|
1745
Medifast
MED
$134M
| $3.13M | ﹤0.01% |
228,799
+22,679
| +11% | +$317K |
|
|
CMBT
1746
CMB.TECH NV
CMBT
$5.27B
| $3.13M | ﹤0.01% |
+333,075
| New | +$3.05M |
|
1747
Playtika
PLTK
$923M
| $3.13M | ﹤0.01% |
803,394
+490,222
| +157% | +$2M |
|
1748
Energizer
ENR
$1.47B
| $3.12M | ﹤0.01% |
+125,528
| New | +$3.28M |
|
1749
G-III Apparel Group
GIII
$1.43B
| $3.12M | ﹤0.01% |
117,402
+85,144
| +264% | +$2.16M |
|
1750
Nordic American Tanker
NAT
$1.48B
| $3.12M | ﹤0.01% |
993,628
-211,211
| -18% | -$623K |
|
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.