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 | |
|---|---|---|---|---|---|---|
|
TIC
2401
TIC Solutions Inc
TIC
$2.13B
| $1.16M | ﹤0.01% |
87,379
+67,779
| +346% | +$773K |
|
2402
Natural Gas Services Group
NGS
$443M
| $1.16M | ﹤0.01% |
41,439
+27,264
| +192% | +$699K |
|
2403
Pliant Therapeutics
PLRX
$73.7M
| $1.16M | ﹤0.01% |
783,255
+505,097
| +182% | +$771K |
|
2404
Liberty Latin America Class C
LILAK
$1.67B
| $1.16M | ﹤0.01% |
+150,873
| New | +$1.03M |
|
2405
ARK Innovation ETF
ARKK
$6.6B
| $1.16M | ﹤0.01% |
+13,389
| New | +$1.02M |
|
2406
Southern California Bancorp
BCAL
$687M
| $1.15M | ﹤0.01% |
69,114
+53,512
| +343% | +$879K |
|
2407
Stratasys
SSYS
$693M
| $1.15M | ﹤0.01% |
102,645
-4,683
| -4% | -$50.5K |
|
2408
The Greenbrier Companies
GBX
$1.43B
| $1.15M | ﹤0.01% |
24,886
-40,911
| -62% | -$1.95M |
|
2409
Radcom
RDCM
$171M
| $1.15M | ﹤0.01% |
79,203
+37,898
| +92% | +$517K |
|
2410
V2X
VVX
$2.4B
| $1.15M | ﹤0.01% |
19,741
-17,595
| -47% | -$941K |
|
2411
Schwab US Dividend Equity ETF
SCHD
$112B
| $1.14M | ﹤0.01% |
+41,941
| New | +$1.14M |
|
2412
Insteel Industries
IIIN
$589M
| $1.14M | ﹤0.01% |
29,830
-33,753
| -53% | -$1.28M |
|
|
HBI
2413
DELISTED
Hanesbrands
HBI
| $1.14M | ﹤0.01% |
+173,457
| New | +$958K |
|
2414
Leonardo DRS
DRS
$10.2B
| $1.14M | ﹤0.01% |
25,156
-22,609
| -47% | -$985K |
|
2415
Aaon
AAON
$6.28B
| $1.14M | ﹤0.01% |
12,184
-45,471
| -79% | -$3.72M |
|
2416
PUT
Arbor Realty Trust
ABR
$961M
| $1.14M | ﹤0.01% |
93,200
-70,600
| -43% | -$821K |
|
2417
Biomea Fusion
BMEA
$125M
| $1.14M | ﹤0.01% |
562,968
+213,321
| +61% | +$391K |
|
2418
Fate Therapeutics
FATE
$306M
| $1.13M | ﹤0.01% |
900,757
+672,352
| +294% | +$725K |
|
|
NUTX
2419
Nutex Health
NUTX
$1.29B
| $1.13M | ﹤0.01% |
10,969
-2,962
| -21% | -$290K |
|
2420
Urban Edge Properties
UE
$2.74B
| $1.13M | ﹤0.01% |
+55,200
| New | +$1.1M |
|
|
FLY
2421
Firefly Aerospace
FLY
$3.73B
| $1.13M | ﹤0.01% |
+38,469
| New | +$1.73M |
|
2422
American Vanguard Corp
AVD
$66.1M
| $1.13M | ﹤0.01% |
196,412
+747
| +0.4% | +$3.56K |
|
2423
Stereotaxis
STXS
$141M
| $1.13M | ﹤0.01% |
+361,888
| New | +$937K |
|
2424
Houlihan Lokey
HLI
$9.02B
| $1.12M | ﹤0.01% |
5,474
-65,833
| -92% | -$12.9M |
|
2425
Cincinnati Financial
CINF
$26.3B
| $1.12M | ﹤0.01% |
7,105
+2,323
| +49% | +$353K |
|
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.