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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

Top Sells

Rank Stock Value
1
NVDA icon
NVIDIA
NVDA
+$885M
2
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$660M
3
GOOG icon
Alphabet (Google) Class C
GOOG
+$463M
4
APP icon
Applovin
APP
+$430M
5
META icon
Meta Platforms (Facebook)
META
+$354M

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
TECL icon
3751
Direxion Daily Technology Bull 3x ETF
TECL
$6.02B
– –
-13,700
Closed -$1.7M
TEVA icon
3752
Teva Pharmaceuticals
TEVA
$42.5B
– –
-1,002,545
Closed -$20.3M
TFI icon
3753
State Street SPDR Nuveen ICE Municipal Bond ETF
TFI
$3.17B
– –
-19,800
Closed -$902K
TFII icon
3754
TFI International
TFII
$11.7B
– –
-27,800
Closed -$2.45M
TGNA
3755
DELISTED
TEGNA Inc
TGNA
– –
-283,600
Closed -$5.77M
THG icon
3756
Hanover Insurance
THG
$7.73B
– –
-2,100
Closed -$381K
TIP icon
3757
iShares TIPS Bond ETF
TIP
$14.7B
– –
-52,700
Closed -$5.86M
TIXT
3758
DELISTED
TELUS International
TIXT
– –
-1,248,700
Closed -$5.59M
TM icon
3759
Toyota
TM
$225B
– –
-68,500
Closed -$13.1M
TMQ
3760
Trilogy Metals
TMQ
$679M
– –
-243,500
Closed -$511K
TMP icon
3761
Tompkins Financial
TMP
$1.43B
– –
-4,230
Closed -$280K
TMV icon
3762
Direxion Daily 20+ Year Treasury Bear 3X ETF
TMV
$194M
– –
-119,000
Closed -$4.17M
TNDM icon
3763
Tandem Diabetes Care
TNDM
$1.63B
– –
-161,500
Closed -$1.96M
TNGX icon
3764
Tango Therapeutics
TNGX
$4.44B
– –
-55,300
Closed -$465K
TPB icon
3765
Turning Point Brands
TPB
$1.77B
– –
-91,552
Closed -$9.05M
TRGP icon
3766
Targa Resources
TRGP
$56.9B
– –
-226,491
Closed -$37.9M
TRML
3767
DELISTED
Tourmaline Bio
TRML
– –
-91,850
Closed -$4.39M
TRVI icon
3768
Trevi Therapeutics
TRVI
$2.54B
– –
-293,300
Closed -$2.68M
TSLY icon
3769
YieldMax TSLA Option Income Strategy ETF
TSLY
$669M
– –
-15,220
Closed -$718K
TTSH
3770
DELISTED
Tile Shop Holdings
TTSH
– –
-98,225
Closed -$594K
TUYA
3771
Tuya Inc
TUYA
$1.1B
– –
-391,700
Closed -$967K
TWM icon
3772
ProShares UltraShort Russell2000
TWM
$41.4M
– –
-17,600
Closed -$596K
TXRH icon
3773
Texas Roadhouse
TXRH
$13.8B
– –
-297,572
Closed -$49.4M
TYRA icon
3774
Tyra Biosciences
TYRA
$1.5B
– –
-170,100
Closed -$2.38M
UA icon
3775
Under Armour Class C
UA
$2.23B
– –
-23,800
Closed -$115K
149 150
151
152 153

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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.