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 | |
|---|---|---|---|---|---|---|
1801
Spok Holdings
SPOK
$221M
| $2.92M | ﹤0.01% |
169,231
+60,462
| +56% | +$1.08M |
|
1802
EverQuote
EVER
$909M
| $2.92M | ﹤0.01% |
127,468
-14,824
| -10% | -$358K |
|
1803
Home BancShares
HOMB
$5.98B
| $2.91M | ﹤0.01% |
+102,770
| New | +$2.98M |
|
|
ADAM
1804
Adamas Trust
ADAM
$880M
| $2.91M | ﹤0.01% |
417,157
+82,347
| +25% | +$572K |
|
|
BXBL
1805
BOXABL Inc
BXBL
$1.49B
| $2.9M | ﹤0.01% |
290,000
| – | – |
|
1806
United Fire Group
UFCS
$1.38B
| $2.89M | ﹤0.01% |
95,076
-6,696
| -7% | -$197K |
|
1807
Global X SuperDividend US ETF
DIV
$793M
| $2.89M | ﹤0.01% |
163,400
+42,100
| +35% | +$746K |
|
1808
Kosmos Energy
KOS
$1.65B
| $2.86M | ﹤0.01% |
1,725,315
+367,079
| +27% | +$687K |
|
1809
Afya
AFYA
$1.25B
| $2.86M | ﹤0.01% |
183,568
-14,888
| -8% | -$228K |
|
1810
Fidelity Enhanced Mid Cap Core ETF
FMDE
$8.32B
| $2.86M | ﹤0.01% |
+79,100
| New | +$2.8M |
|
1811
NVE Corp
NVEC
$515M
| $2.86M | ﹤0.01% |
43,759
+35,383
| +422% | +$2.4M |
|
1812
UFP Technologies
UFPT
$2.37B
| $2.85M | ﹤0.01% |
14,269
-18,968
| -57% | -$4.17M |
|
1813
Invesco Large Cap Growth ETF
PWB
$2.42B
| $2.85M | ﹤0.01% |
22,700
-6,600
| -23% | -$791K |
|
1814
National Presto Industries
NPK
$1.11B
| $2.84M | ﹤0.01% |
25,315
+14,831
| +141% | +$1.57M |
|
1815
Choiceone Financial
COFS
$496M
| $2.84M | ﹤0.01% |
97,963
+65,764
| +204% | +$1.96M |
|
1816
Cass Information Systems
CASS
$733M
| $2.82M | ﹤0.01% |
71,749
+66,188
| +1,190% | +$2.82M |
|
1817
CALL
Oracle
ORCL
$419B
| $2.81M | ﹤0.01% |
+10,000
| New | +$2.55M |
|
1818
Lifeway Foods
LWAY
$400M
| $2.81M | ﹤0.01% |
101,311
+73,203
| +260% | +$2.06M |
|
1819
Saratoga Investment
SAR
$296M
| $2.81M | ﹤0.01% |
115,035
-60,805
| -35% | -$1.52M |
|
1820
Hallador Energy
HNRG
$766M
| $2.8M | ﹤0.01% |
143,325
+53,301
| +59% | +$916K |
|
1821
Caesars Entertainment
CZR
$6.05B
| $2.8M | ﹤0.01% |
+103,750
| New | +$2.81M |
|
|
LENZ
1822
LENZ Therapeutics
LENZ
$151M
| $2.8M | ﹤0.01% |
+60,182
| New | +$2.21M |
|
1823
Comstock Resources
CRK
$4.17B
| $2.79M | ﹤0.01% |
140,890
+114,472
| +433% | +$2.12M |
|
1824
Oil States International
OIS
$509M
| $2.79M | ﹤0.01% |
460,689
+104,427
| +29% | +$573K |
|
1825
Tyra Biosciences
TYRA
$1.6B
| $2.79M | ﹤0.01% |
199,438
+93,613
| +88% | +$1.07M |
|
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.