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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
ASTS icon
3226
AST SpaceMobile
ASTS
$22.2B
– –
-137,700
Closed -$6.76M
ASX icon
3227
ASE Group
ASX
$102B
– –
-1,504,285
Closed -$16.7M
ATI icon
3228
ATI
ATI
$31.4B
– –
-259,992
Closed -$21.1M
FRMM
3229
Forum Markets
FRMM
$81.8M
– –
-75,621
Closed -$1.82M
ATOM icon
3230
Atomera
ATOM
$216M
– –
-60,300
Closed -$267K
AUR icon
3231
Aurora
AUR
$13.5B
– –
-1,816,800
Closed -$9.79M
AVB icon
3232
AvalonBay Communities
AVB
$25.7B
– –
-36,814
Closed -$7.11M
AVNS
3233
DELISTED
Avanos Medical
AVNS
– –
-78,500
Closed -$907K
AVNT icon
3234
Avient
AVNT
$4.16B
– –
-92,558
Closed -$3.05M
AVTR icon
3235
Avantor
AVTR
$9.42B
– –
-1,651,100
Closed -$20.6M
AVY icon
3236
Avery Dennison
AVY
$13.7B
– –
-125,500
Closed -$20.4M
AXTA icon
3237
Axalta
AXTA
$7.98B
– –
-243,100
Closed -$6.96M
AZ icon
3238
A2Z Smart Technologies
AZ
$288M
– –
-87,000
Closed -$695K
AZZ icon
3239
AZZ Inc
AZZ
$4.55B
– –
-14,200
Closed -$1.55M
BABX icon
3240
GraniteShares ETF Trust GraniteShares 2x Long BABA Daily ETF
BABX
$104M
– –
-11,900
Closed -$678K
BAC icon
3241
Bank of America
BAC
$453B
– –
-893,232
Closed -$46.1M
BALY icon
3242
Bally's
BALY
$671M
– –
-25,137
Closed -$279K
BBAI icon
3243
BigBear.ai
BBAI
$1.56B
– –
-2,290,451
Closed -$14.9M
BBAX icon
3244
JPMorgan BetaBuilders Developed Asia Pacific-ex Japan ETF
BBAX
$6.8B
– –
-14,200
Closed -$800K
BBEU icon
3245
JPMorgan BetaBuilders Europe ETF
BBEU
$9.52B
– –
-18,000
Closed -$1.25M
BBIO icon
3246
BridgeBio Pharma
BBIO
$16.4B
– –
-322,246
Closed -$16.7M
BBUC
3247
Brookfield Business Corp Class A Subordinate Voting Shares
BBUC
$5.93B
– –
-12,000
Closed -$402K
BBW icon
3248
Build-A-Bear
BBW
$464M
– –
-10,709
Closed -$698K
BCS icon
3249
Barclays
BCS
$94.4B
– –
-2,027,986
Closed -$41.9M
BEDU
3250
DELISTED
Bright Scholar Education Holdings
BEDU
– –
-22,025
Closed -$42.9K
128 129
130
131 132

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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.