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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
+2.8%
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
$64.5B
AUM Growth
-$11.3B
Cap. Flow
-$10.1B
Cap. Flow %
-15.68%
Top 10 Hldgs %
12.13%
Holding
3,923
New
466
Increased
1,028
Reduced
1,682
Closed
737

Top Buys

Rank Stock Value
1
COST icon
Costco
COST
+$616M
2
NFLX icon
Netflix
NFLX
+$481M
3
MU icon
Micron Technology
MU
+$416M
4
TSLA icon
Tesla
TSLA
+$416M
5
PG icon
Procter & Gamble
PG
+$322M

Sector Composition

Rank Sector Weight
1 Technology 20.84%
2 Healthcare 15.77%
3 Consumer Discretionary 13.88%
4 Industrials 9.94%
5 Financials 8.79%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
PRHI
3151
Presurance Holdings
PRHI
$15.4M
$18.2K ﹤0.01%
+3,643
New +$29.5K
BYSI icon
3152
BeyondSpring
BYSI
$30.5M
$17.9K ﹤0.01%
11,000
-600
-5% -$1.15K
TOMZ icon
3153
TOMI Environmental Solutions
TOMZ
$12.9M
$17.7K ﹤0.01%
7,567
-3,700
-33% -$9.52K
MTNB icon
3154
Matinas BioPharma
MTNB
$1.54M
$17K ﹤0.01%
28,970
+700
+2% +$825
NXPL icon
3155
NextPlat
NXPL
$18.2M
$16.9K ﹤0.01%
3,160
+1,200
+61% +$8.55K
NVNO
3156
enVVeno Medical
NVNO
$7.5M
$16.5K ﹤0.01%
1,466
+632
+76% +$12.3K
AMTD
3157
AMTD IDEA Group
AMTD
$71.2M
$16.4K ﹤0.01%
16,666
-16,999
-50% -$18K
DKI
3158
DarkIris Inc
DKI
$8.7M
$16.1K ﹤0.01%
+3,177
New +$28.3K
TRIB
3159
Trinity Biotech
TRIB
$7.86M
$16K ﹤0.01%
675
-5,037
-88% -$149K
WPRT
3160
Westport Fuel Systems
WPRT
$34.6M
$15.7K ﹤0.01%
+10,023
New +$18.7K
BTBD icon
3161
BT Brands
BTBD
$7.79M
$14.6K ﹤0.01%
+10,485
New +$17.2K
CPHI icon
3162
China Pharma Holdings
CPHI
$46.6M
$13.7K ﹤0.01%
11,318
+700
+7% +$1.15K
NCRA icon
3163
Nocera
NCRA
$3.65M
$13.2K ﹤0.01%
517
-660
-56% -$25.1K
CJMB
3164
Callan JMB Inc
CJMB
$12.4M
$12.7K ﹤0.01%
+11,400
New +$35.4K
HODO
3165
House of Doge
HODO
$39.1M
$12.2K ﹤0.01%
+3,825
New +$31.8K
ONMD icon
3166
OneMedNet
ONMD
$42.1M
$12.2K ﹤0.01%
+11,116
New +$19.7K
PETZ icon
3167
TDH Holdings
PETZ
$15.7M
$11.5K ﹤0.01%
12,600
+800
+7% +$827
ETS
3168
Elite Express Holding Inc
ETS
$54.6M
$11.5K ﹤0.01%
+23,190
New +$15K
CLPS icon
3169
CLPS Inc
CLPS
$26.1M
$10.5K ﹤0.01%
13,132
+100
+0.8% +$92
LEXX icon
3170
Lexaria Bioscience
LEXX
$10.1M
$9.63K ﹤0.01%
1,040
+367
+55% +$5.21K
ZJYL
3171
Jin Medical International
ZJYL
$27.3M
$8.8K ﹤0.01%
+2,000
New +$11.8K
HMR
3172
Heidmar Maritime Holdings
HMR
$77.9M
$8.69K ﹤0.01%
+11,100
New +$12.9K
BMGL
3173
Basel Medical
BMGL
$7.06M
$7.1K ﹤0.01%
+1,208
New +$17.8K
MYND
3174
Mynd.ai
MYND
$18.4M
$7.1K ﹤0.01%
16,244
+500
+3% +$322
ATXG icon
3175
Addentax Group
ATXG
$5.05M
$6.71K ﹤0.01%
+1,140
New +$10.3K

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Jim Simons's Q4 2025 Portfolio in Review

As of Q4 2025, Jim Simons held 3,923 positions worth $64.5B, down 15% from $75.8B the previous quarter. Its ten largest holdings account for 12% of the portfolio.

Jim Simons withdrew a net $10.1B in Q4 2025, closing 737 positions and reducing 1,682 holdings. Its most notable exit was Meta Platforms (Facebook), an estimated $354M position sold in full.

By sector, the portfolio is most concentrated in Technology at 21% of assets, down from 22% a quarter earlier, followed by Healthcare and Consumer Discretionary.

Against the trend, Jim Simons opened a new position in ServiceNow worth $204M.

  • Jim Simons's largest Q4 2025 buy was ServiceNow: 1,331,977 shares worth $204M.
  • Jim Simons added most to Costco in Q4 2025, an estimated $616M increase.
  • Jim Simons's biggest Q4 2025 reduction was NVIDIA, cutting an estimated $885M.
  • Jim Simons fully exited Meta Platforms (Facebook) in Q4 2025, selling an estimated $354M.
  • Jim Simons's ten largest holdings make up 12% of its $64.5B portfolio in Q4 2025.
  • Jim Simons opened 466 new positions and closed 737 in Q4 2025.
  • Jim Simons's portfolio value fell 15% quarter-over-quarter to $64.5B.

Based on Renaissance Technologies's 13F filing for Q4 2025, filed 12 Feb 2026.