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 | |
|---|---|---|---|---|---|---|
2526
Viant Technology
DSP
$260M
| $956K | ﹤0.01% |
110,830
+89,997
| +432% | +$1.03M |
|
2527
PepsiCo
PEP
$194B
| $954K | ﹤0.01% |
+6,796
| New | +$970K |
|
2528
SelectQuote
SLQT
$96.7M
| $954K | ﹤0.01% |
486,724
+424,318
| +680% | +$898K |
|
2529
Galicia Financial Group
GGAL
$7.1B
| $954K | ﹤0.01% |
34,606
+10,801
| +45% | +$464K |
|
2530
Appian
APPN
$2.84B
| $953K | ﹤0.01% |
31,163
-10,996
| -26% | -$330K |
|
2531
Samsara
IOT
$22.8B
| $952K | ﹤0.01% |
25,547
-62,399
| -71% | -$2.32M |
|
2532
Rackspace Technology
RXT
$867M
| $950K | ﹤0.01% |
673,689
+529,862
| +368% | +$710K |
|
|
STKL
2533
DELISTED
SunOpta
STKL
| $950K | ﹤0.01% |
+162,035
| New | +$1.01M |
|
2534
CALL
SLB Ltd
SLB
$79.1B
| $949K | ﹤0.01% |
+27,600
| New | +$960K |
|
2535
Kopin
KOPN
$898M
| $948K | ﹤0.01% |
390,223
+103,790
| +36% | +$212K |
|
2536
CALL
Salesforce
CRM
$168B
| $948K | ﹤0.01% |
+4,000
| New | +$1.01M |
|
2537
Lucid Motors
LCID
$2.07B
| $947K | ﹤0.01% |
39,790
-21,453
| -35% | -$485K |
|
2538
Mistras Group
MG
$605M
| $945K | ﹤0.01% |
96,028
+35,721
| +59% | +$318K |
|
2539
Kinetik
KNTK
$4.36B
| $943K | ﹤0.01% |
22,075
-175,821
| -89% | -$7.43M |
|
|
TXNM
2540
TXNM Energy Inc
TXNM
$5.91B
| $943K | ﹤0.01% |
16,675
-27,953
| -63% | -$1.59M |
|
2541
Intellicheck
IDN
$58M
| $943K | ﹤0.01% |
181,281
+107,243
| +145% | +$564K |
|
2542
Aveanna Healthcare
AVAH
$2.97B
| $941K | ﹤0.01% |
+106,108
| New | +$671K |
|
|
ALM
2543
Almonty Industries
ALM
$5.46B
| $940K | ﹤0.01% |
+155,833
| New | +$709K |
|
2544
Allot
ALLT
$373M
| $938K | ﹤0.01% |
+88,646
| New | +$752K |
|
2545
California Water Service
CWT
$3.13B
| $935K | ﹤0.01% |
20,376
+12,900
| +173% | +$594K |
|
2546
eHealth
EHTH
$38.4M
| $933K | ﹤0.01% |
216,480
-29,896
| -12% | -$115K |
|
2547
Cannae Holdings
CNNE
$677M
| $930K | ﹤0.01% |
50,808
+8,040
| +19% | +$159K |
|
2548
CALL
Centrus Energy
LEU
$3.86B
| $930K | ﹤0.01% |
+3,000
| New | +$664K |
|
2549
OFS Capital
OFS
$48.9M
| $930K | ﹤0.01% |
120,908
+6,636
| +6% | +$55.9K |
|
2550
CALL
iShares 20+ Year Treasury Bond ETF
TLT
$47.1B
| $929K | ﹤0.01% |
+10,400
| New | +$910K |
|
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.