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 | |
|---|---|---|---|---|---|---|
1676
United Airlines
UAL
$36.9B
| $3.45M | 0.01% |
35,800
-56,929
| -61% | -$5.48M |
|
1677
Matador Resources
MTDR
$7.12B
| $3.45M | 0.01% |
+76,821
| New | +$3.75M |
|
|
FBRT
1678
Franklin BSP Realty Trust
FBRT
$701M
| $3.44M | 0.01% |
317,213
+179
| +0.1% | +$1.97K |
|
1679
CACI
CACI
$14.1B
| $3.44M | 0.01% |
6,892
+4,892
| +245% | +$2.36M |
|
1680
Oportun Financial
OPRT
$350M
| $3.44M | 0.01% |
557,051
+54,459
| +11% | +$351K |
|
1681
Methode Electronics
MEI
$498M
| $3.43M | 0.01% |
454,432
+218,841
| +93% | +$1.63M |
|
|
RANG
1682
Range Capital Acquisition Corp
RANG
$72.3M
| $3.43M | 0.01% |
332,291
| – | – |
|
|
CBLL
1683
CeriBell Inc
CBLL
$919M
| $3.42M | 0.01% |
297,963
+133,324
| +81% | +$1.8M |
|
1684
T. Rowe Price
TROW
$24B
| $3.42M | 0.01% |
33,340
+17,665
| +113% | +$1.86M |
|
1685
Titan International
TWI
$454M
| $3.42M | 0.01% |
452,317
+186,048
| +70% | +$1.66M |
|
1686
ALPS O'Shares US Small-Cap Quality Dividend ETF
OUSM
$867M
| $3.4M | 0.01% |
76,000
+31,600
| +71% | +$1.4M |
|
|
BDN
1687
Brandywine Realty Trust
BDN
$548M
| $3.39M | 0.01% |
812,246
-239,908
| -23% | -$1.01M |
|
1688
Theravance Biopharma
TBPH
$883M
| $3.38M | 0.01% |
231,272
+213,480
| +1,200% | +$2.7M |
|
1689
ETC 6 Meridian Mega Cap Equity ETF
SIXA
$548M
| $3.37M | 0.01% |
+67,892
| New | +$3.35M |
|
1690
Franklin Electric
FELE
$4.56B
| $3.36M | 0.01% |
35,341
+1,708
| +5% | +$162K |
|
1691
Maravai LifeSciences
MRVI
$1.26B
| $3.36M | 0.01% |
1,172,248
-160,513
| -12% | -$410K |
|
1692
PC Connection
CNXN
$1.94B
| $3.36M | 0.01% |
54,263
+31,311
| +136% | +$2M |
|
|
AII
1693
American Integrity Insurance
AII
$512M
| $3.36M | 0.01% |
150,436
+5,943
| +4% | +$113K |
|
1694
Navient
NAVI
$888M
| $3.36M | 0.01% |
255,172
+117,240
| +85% | +$1.59M |
|
1695
TFS Financial
TFSL
$4.95B
| $3.36M | 0.01% |
254,651
+189,282
| +290% | +$2.5M |
|
1696
Bio-Techne
TECH
$11.3B
| $3.35M | 0.01% |
60,300
+17,900
| +42% | +$959K |
|
1697
Masco
MAS
$14.4B
| $3.35M | 0.01% |
47,642
-8,722
| -15% | -$614K |
|
1698
Ultrapar
UGP
$7.16B
| $3.35M | 0.01% |
817,679
-195,556
| -19% | -$665K |
|
1699
N-able
NABL
$680M
| $3.35M | 0.01% |
429,625
+175,445
| +69% | +$1.41M |
|
1700
Rigetti Computing
RGTI
$5.46B
| $3.34M | 0.01% |
112,072
-489,009
| -81% | -$8.57M |
|
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.