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Jim Simons

Jim Simons Renaissance Technologies

AUM $63.9B
1-Year Est. Return 45.56%
 

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.

This Fund
S&P 500
This Quarter Est. Return
+17.5%
1 Year Est. Return
+45.56%
3 Year Est. Return
+129.95%
5 Year Est. Return
+153.6%
10 Year Est. Return
+738.31%
AUM
$75.8B
AUM Growth
+$582M
Cap. Flow
-$5.41B
Cap. Flow %
-7.14%
Top 10 Hldgs %
11.47%
Holding
4,038
New
516
Increased
1,457
Reduced
1,457
Closed
581

Top Buys

Rank Stock Value
1
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$546M
2
MSFT icon
Microsoft
MSFT
+$480M
3
GOOG icon
Alphabet (Google) Class C
GOOG
+$362M
4
META icon
Meta Platforms (Facebook)
META
+$350M
5
KO icon
Coca-Cola
KO
+$266M

Top Sells

Rank Stock Value
1
HOOD icon
Robinhood
HOOD
+$1.04B
2
PLTR icon
Palantir
PLTR
+$800M
3
AAPL icon
Apple
AAPL
+$516M
4
NFLX icon
Netflix
NFLX
+$326M
5
NVDA icon
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
QQQ icon
3826
Invesco QQQ Trust
QQQ
$478B
– –
-46,100
Closed -$25.4M
QQQE icon
3827
Direxion NASDAQ-100 Equal Weighted Index ETF
QQQE
$1.42B
– –
-4,376
Closed -$430K
QSI icon
3828
Quantum-Si Incorporated
QSI
$179M
– –
-89,200
Closed -$175K
QTUM icon
3829
Defiance Quantum ETF
QTUM
$5.63B
– –
-29,300
Closed -$2.69M
QTRX icon
3830
Quanterix
QTRX
$124M
– –
-103,200
Closed -$686K
RBA icon
3831
RB Global
RBA
$16.6B
– –
-79,284
Closed -$8.42M
RBOT
3832
DELISTED
Vicarious Surgical
RBOT
– –
-11,134
Closed -$83.5K
RCI icon
3833
Rogers Communications
RCI
$19.1B
– –
-46,030
Closed -$1.37M
RDUS
3834
DELISTED
Radius Recycling
RDUS
– –
-106,196
Closed -$3.15M
RDZN icon
3835
Roadzen
RDZN
$112M
– –
-17,600
Closed -$17.2K
REPL icon
3836
Replimune Group
REPL
$1.15B
– –
-153,089
Closed -$1.42M
REYN icon
3837
Reynolds Consumer Products
REYN
$5.51B
– –
-248,400
Closed -$5.32M
RGA icon
3838
Reinsurance Group of America
RGA
$16B
– –
-30,800
Closed -$6.11M
RH icon
3839
RH
RH
$3.46B
– –
-34,200
Closed -$6.46M
RHP icon
3840
Ryman Hospitality Properties
RHP
$7.7B
– –
-81,541
Closed -$8.05M
RNAC icon
3841
Cartesian Therapeutics
RNAC
$260M
– –
-19,500
Closed -$203K
RRC icon
3842
Range Resources
RRC
$9.5B
– –
-64,291
Closed -$2.61M
RRX icon
3843
Regal Rexnord
RRX
$11.5B
– –
-59,013
Closed -$8.55M
RSVR
3844
Reservoir Media
RSVR
$653M
– –
-12,600
Closed -$96.6K
RUM icon
3845
RUM Group Inc
RUM
$1.91B
– –
-141,100
Closed -$1.27M
RZLT icon
3846
Rezolute
RZLT
$445M
– –
-52,833
Closed -$236K
S icon
3847
SentinelOne
S
$7.7B
– –
-619,084
Closed -$11.3M
SAGE
3848
DELISTED
Sage Therapeutics
SAGE
– –
-1,113,400
Closed -$10.2M
SATX
3849
DELISTED
SatixFy Communications
SATX
– –
-49,600
Closed -$145K
SCHX icon
3850
Schwab US Large- Cap ETF
SCHX
$74.3B
– –
-100,100
Closed -$2.45M
152 153
154
155 156

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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.