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 | |
|---|---|---|---|---|---|---|
1651
Kearny Financial
KRNY
$638M
| $3.58M | 0.01% |
545,365
+44,500
| +9% | +$286K |
|
1652
Independent Bank Corp
IBCP
$820M
| $3.56M | 0.01% |
115,004
+29,967
| +35% | +$968K |
|
1653
Fulgent Genetics
FLGT
$535M
| $3.56M | 0.01% |
157,608
+63,889
| +68% | +$1.32M |
|
1654
Renaissance IPO ETF
IPO
$150M
| $3.55M | 0.01% |
+71,700
| New | +$3.48M |
|
1655
Hanmi Financial
HAFC
$926M
| $3.55M | 0.01% |
143,837
+52,918
| +58% | +$1.3M |
|
1656
Newmont
NEM
$139B
| $3.55M | 0.01% |
42,099
+3,231
| +8% | +$225K |
|
1657
Towne Bank
TOWN
$3.5B
| $3.55M | 0.01% |
102,590
+22,024
| +27% | +$789K |
|
|
PDM
1658
Piedmont Realty Trust
PDM
$1.23B
| $3.54M | 0.01% |
392,879
-121,993
| -24% | -$982K |
|
1659
TriplePoint Venture Growth BDC
TPVG
$217M
| $3.54M | 0.01% |
612,727
+226,479
| +59% | +$1.51M |
|
1660
Avantor
AVTR
$9.64B
| $3.53M | 0.01% |
282,882
-2,702
| -0.9% | -$34.8K |
|
1661
BlueLinx
BXC
$653M
| $3.53M | 0.01% |
48,242
+38,240
| +382% | +$3.01M |
|
1662
Teradyne
TER
$57B
| $3.52M | 0.01% |
25,600
-618,759
| -96% | -$67.6M |
|
1663
Indivior Pharmaceuticals
INDV
$4.27B
| $3.52M | 0.01% |
145,834
+103,243
| +242% | +$2.16M |
|
1664
Mercantile Bank Corp
MBWM
$1.04B
| $3.51M | 0.01% |
77,989
+40,824
| +110% | +$1.94M |
|
|
ARIS
1665
DELISTED
Aris Water Solutions
ARIS
| $3.51M | 0.01% |
142,227
-9,623
| -6% | -$223K |
|
1666
Weatherford International
WFRD
$6.36B
| $3.5M | 0.01% |
51,194
-32,002
| -38% | -$1.9M |
|
1667
Corcept Therapeutics
CORT
$13.3B
| $3.5M | 0.01% |
42,126
-18,718
| -31% | -$1.35M |
|
|
DFTX
1668
Definium Therapeutics
DFTX
$5.81B
| $3.5M | 0.01% |
296,443
+239,965
| +425% | +$2.24M |
|
1669
Futu Holdings
FUTU
$16.2B
| $3.48M | 0.01% |
+20,000
| New | +$3.32M |
|
1670
Cellebrite
CLBT
$2.88B
| $3.47M | 0.01% |
187,443
-691,275
| -79% | -$10.9M |
|
1671
Brunswick
BC
$5.26B
| $3.46M | 0.01% |
54,788
-29,359
| -35% | -$1.82M |
|
1672
Community Trust Bancorp
CTBI
$1.39B
| $3.46M | 0.01% |
61,925
-3,525
| -5% | -$198K |
|
|
GAU
1673
Galiano Gold
GAU
$633M
| $3.46M | 0.01% |
1,580,856
+1,495,059
| +1,743% | +$2.79M |
|
1674
Ennis
EBF
$544M
| $3.46M | 0.01% |
189,374
+41,727
| +28% | +$759K |
|
1675
ePlus
PLUS
$2.25B
| $3.46M | 0.01% |
+48,669
| New | +$3.43M |
|
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.