Jim Simons Renaissance Technologies
Jim Simons is the founder of Renaissance Technologies, one of the most successful quantitative hedge funds in the world. Before his career in finance, he served as a mathematics professor and made significant contributions to differential geometry. Simons applied his analytical expertise to develop sophisticated, algorithm-driven trading strategies, earning consistently high returns for investors.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class A
GOOGL
|
+$546M |
| 2 |
Microsoft
MSFT
|
+$480M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$362M |
| 4 |
Meta Platforms (Facebook)
META
|
+$350M |
| 5 |
Coca-Cola
KO
|
+$266M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Robinhood
HOOD
|
+$1.04B |
| 2 |
Palantir
PLTR
|
+$800M |
| 3 |
Apple
AAPL
|
+$516M |
| 4 |
Netflix
NFLX
|
+$326M |
| 5 |
NVIDIA
NVDA
|
+$313M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 21.71% |
| 2 | Healthcare | 15.16% |
| 3 | Consumer Discretionary | 11.81% |
| 4 | Communication Services | 10.53% |
| 5 | Financials | 9.27% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
951
MYR Group
MYRG
$5.18B
| $13M | 0.02% |
62,600
-12,200
| -16% | -$2.28M |
|
952
Fidelity Total Bond ETF
FBND
$27.4B
| $13M | 0.02% |
280,700
+24,300
| +9% | +$1.12M |
|
953
Atlanta Braves Holdings Series A
BATRA
$3.63B
| $13M | 0.02% |
285,400
+11,700
| +4% | +$553K |
|
954
ArcelorMittal
MT
$55.2B
| $12.9M | 0.02% |
357,971
-172,300
| -32% | -$5.81M |
|
955
Angi Inc
ANGI
$176M
| $12.9M | 0.02% |
794,143
+269,600
| +51% | +$4.62M |
|
956
Equinor
EQNR
$96.3B
| $12.9M | 0.02% |
529,310
-75,290
| -12% | -$1.89M |
|
957
Haleon
HLN
$43.2B
| $12.9M | 0.02% |
1,434,399
-6,352,300
| -82% | -$61.2M |
|
958
Zillow
ZG
$7.53B
| $12.9M | 0.02% |
172,800
+19,200
| +13% | +$1.51M |
|
959
Insperity
NSP
$1.92B
| $12.9M | 0.02% |
261,400
+254,100
| +3,481% | +$13.9M |
|
960
UGI
UGI
$7.53B
| $12.9M | 0.02% |
386,583
-160,100
| -29% | -$5.6M |
|
|
VG
961
Venture Global Inc
VG
$33.9B
| $12.8M | 0.02% |
904,600
-1,106,400
| -55% | -$15.8M |
|
962
SLB Ltd
SLB
$78.1B
| $12.8M | 0.02% |
372,836
+339,926
| +1,033% | +$11.8M |
|
963
Castle Biosciences
CSTL
$960M
| $12.8M | 0.02% |
562,600
-107,900
| -16% | -$2.19M |
|
964
UMB Financial
UMBF
$11.4B
| $12.8M | 0.02% |
108,070
-148,000
| -58% | -$17.1M |
|
965
TD Synnex
SNX
$20.4B
| $12.8M | 0.02% |
+78,028
| New | +$11.5M |
|
966
Civeo
CVEO
$345M
| $12.8M | 0.02% |
554,432
-5,200
| -0.9% | -$122K |
|
967
Western New England Bancorp
WNEB
$282M
| $12.7M | 0.02% |
1,061,462
-6,800
| -0.6% | -$77.5K |
|
968
Birkenstock
BIRK
$7.54B
| $12.7M | 0.02% |
281,100
+110,600
| +65% | +$5.41M |
|
969
Viavi Solutions
VIAV
$10.6B
| $12.7M | 0.02% |
1,002,288
+542,600
| +118% | +$5.97M |
|
970
State Street
STT
$52.2B
| $12.7M | 0.02% |
109,631
-35,000
| -24% | -$3.91M |
|
971
Rayonier
RYN
$6.47B
| $12.7M | 0.02% |
500,235
+266,925
| +114% | +$6.4M |
|
972
Utah Medical Products
UTMD
$230M
| $12.7M | 0.02% |
200,914
-12,400
| -6% | -$734K |
|
973
Southern Copper
SCCO
$165B
| $12.6M | 0.02% |
108,136
-279,098
| -72% | -$27.1M |
|
974
Broadridge
BR
$19.3B
| $12.6M | 0.02% |
+52,800
| New | +$13.1M |
|
975
Diebold Nixdorf
DBD
$2.45B
| $12.6M | 0.02% |
220,180
+69,280
| +46% | +$4.1M |
|
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Jim Simons's Q3 2025 Portfolio in Review
As of Q3 2025, Jim Simons held 4,038 positions worth $75.8B, up 0.77% from $75.2B the previous quarter. Its ten largest holdings account for 11% of the portfolio.
Jim Simons withdrew a net $5.41B in Q3 2025, closing 581 positions and reducing 1,457 holdings. Its most notable exit was GE Aerospace, an estimated $235M position sold in full.
By sector, the portfolio is most concentrated in Technology at 22% of assets, up from 20% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Jim Simons opened a new position in Alphabet (Google) Class C worth $419M.
- Jim Simons's largest Q3 2025 buy was Alphabet (Google) Class C: 1,720,002 shares worth $419M.
- Jim Simons added most to Alphabet (Google) Class A in Q3 2025, an estimated $546M increase.
- Jim Simons's biggest Q3 2025 reduction was Robinhood, cutting an estimated $1.04B.
- Jim Simons fully exited GE Aerospace in Q3 2025, selling an estimated $235M.
- Jim Simons's ten largest holdings make up 11% of its $75.8B portfolio in Q3 2025.
- Jim Simons opened 516 new positions and closed 581 in Q3 2025.
- Jim Simons's portfolio value rose 0.77% quarter-over-quarter to $75.8B.
Based on Renaissance Technologies's 13F filing for Q3 2025, filed 13 Nov 2025.