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 | |
|---|---|---|---|---|---|---|
326
Klaviyo
KVYO
$5.22B
| $46.9M | 0.07% |
1,692,181
+561,315
| +50% | +$18.1M |
|
327
Denison Mines
DNN
$3.17B
| $46.8M | 0.07% |
17,026,392
+16,078,514
| +1,696% | +$35.6M |
|
328
Ares Capital
ARCC
$14.3B
| $46.1M | 0.07% |
2,256,782
-473,782
| -17% | -$10.5M |
|
329
TFI International
TFII
$11.6B
| $46M | 0.07% |
522,498
+56,274
| +12% | +$5.15M |
|
330
iShares US Financials ETF
IYF
$4.36B
| $45.7M | 0.07% |
360,700
-3,200
| -0.9% | -$396K |
|
331
Keurig Dr Pepper
KDP
$43.6B
| $45.6M | 0.07% |
1,788,162
+1,679,023
| +1,538% | +$52.6M |
|
332
Natera
NTRA
$47.9B
| $45.3M | 0.07% |
281,566
+29,122
| +12% | +$4.61M |
|
333
SiriusXM
SIRI
$9.67B
| $45M | 0.07% |
1,933,521
+1,410,963
| +270% | +$32.6M |
|
334
QuantumScape Corp
QS
$3.68B
| $44.7M | 0.07% |
3,630,275
+2,178,918
| +150% | +$21.3M |
|
|
CVSA
335
Covista Inc
CVSA
$4.51B
| $44.4M | 0.07% |
287,753
+104,969
| +57% | +$13.4M |
|
336
RenaissanceRe
RNR
$13.4B
| $44.3M | 0.07% |
174,368
+133,820
| +330% | +$32.4M |
|
337
Graco
GGG
$13.1B
| $44.1M | 0.07% |
519,456
+73,382
| +16% | +$6.28M |
|
338
iShares US Broker-Dealers & Securities Exchanges ETF
IAI
$1.41B
| $44.1M | 0.07% |
249,100
+46,700
| +23% | +$8.13M |
|
339
Vanguard S&P 500 ETF
VOO
$1.02T
| $44M | 0.07% |
71,870
+14,780
| +26% | +$8.71M |
|
340
Medpace
MEDP
$17.3B
| $43.9M | 0.07% |
85,369
-181,381
| -68% | -$79.2M |
|
341
Reddit
RDDT
$29.5B
| $43.7M | 0.07% |
190,006
+1,500
| +0.8% | +$306K |
|
|
SPR
342
PUT
DELISTED
Spirit AeroSystems
SPR
| $43.6M | 0.07% |
1,130,300
+2,300
| +0.2% | +$91.9K |
|
343
Lemonade
LMND
$4.13B
| $43.5M | 0.06% |
813,062
+252,298
| +45% | +$12.3M |
|
344
Idacorp
IDA
$7.94B
| $43.5M | 0.06% |
328,998
-71,167
| -18% | -$8.81M |
|
345
ICICI Bank
IBN
$107B
| $43.3M | 0.06% |
1,433,610
-523,539
| -27% | -$17.1M |
|
|
LTM
346
LATAM Airlines Group S.A.
LTM
$14.8B
| $43.2M | 0.06% |
954,224
+451,107
| +90% | +$20.3M |
|
347
Pagaya Technologies
PGY
$1.81B
| $43.1M | 0.06% |
1,452,578
+71,639
| +5% | +$2.31M |
|
348
Genmab
GMAB
$20.6B
| $42.7M | 0.06% |
1,391,215
-227,329
| -14% | -$5.54M |
|
|
VISN
349
Vistance Networks Inc
VISN
$2.59B
| $42.4M | 0.06% |
2,740,691
-932,860
| -25% | -$12.1M |
|
350
Intellia Therapeutics
NTLA
$1.8B
| $42.3M | 0.06% |
2,449,607
+173,033
| +8% | +$2.13M |
|
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.