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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
EEM icon
2851
iShares MSCI Emerging Markets ETF
EEM
$30.4B
$230K ﹤0.01%
4,200
-18,600
-82% -$1.01M
NWBI icon
2852
Northwest Bancshares
NWBI
$2.3B
$229K ﹤0.01%
19,069
-206,172
-92% -$2.51M
INUV icon
2853
Inuvo
INUV
$14.2M
$228K ﹤0.01%
91,841
+4,300
+5% +$12.4K
UROY
2854
Uranium Royalty Corp
UROY
$1.56B
$227K ﹤0.01%
+64,200
New +$251K
NSTS icon
2855
NSTS Bancorp
NSTS
$66.8M
$227K ﹤0.01%
17,497
+3,097
+22% +$35.3K
CBK
2856
Commercial Bancgroup
CBK
$485M
$226K ﹤0.01%
+9,200
New +$226K
SVC
2857
Service Properties Trust
SVC
$1.1B
$225K ﹤0.01%
24,480
+2,400
+11% +$24.1K
TRUP icon
2858
Trupanion
TRUP
$1.33B
$224K ﹤0.01%
+6,000
New +$236K
ELTX icon
2859
Elicio Therapeutics
ELTX
$80.4M
$224K ﹤0.01%
28,111
-20,560
-42% -$187K
SKYY icon
2860
First Trust Cloud Computing ETF
SKYY
$3.25B
$221K ﹤0.01%
+1,700
New +$227K
ENLV icon
2861
Enlivex Ltd
ENLV
$31M
$221K ﹤0.01%
20,909
+10,423
+99% +$155K
XLO icon
2862
Xilio Therapeutics
XLO
$59.6M
$220K ﹤0.01%
24,601
+9,980
+68% +$105K
VRCA icon
2863
Verrica Pharmaceuticals
VRCA
$87.4M
$219K ﹤0.01%
26,400
-2,791
-10% -$15.5K
GAME icon
2864
GameSquare
GAME
$42.2M
$219K ﹤0.01%
569,100
+35,000
+7% +$20.2K
TONX
2865
TON Strategy Co
TONX
$158M
$218K ﹤0.01%
+109,400
New +$400K
AWX icon
2866
Avalon Holdings
AWX
$10.7M
$217K ﹤0.01%
80,510
+300
+0.4% +$816
RZLT icon
2867
Rezolute
RZLT
$453M
$216K ﹤0.01%
+91,461
New +$717K
NPWR icon
2868
NET Power
NPWR
$144M
$216K ﹤0.01%
+94,600
New +$296K
KOP icon
2869
Koppers
KOP
$857M
$214K ﹤0.01%
7,900
-19,400
-71% -$543K
HIT
2870
Health In Tech Inc
HIT
$66.8M
$214K ﹤0.01%
+134,317
New +$293K
ENTX icon
2871
Entera Bio
ENTX
$138M
$210K ﹤0.01%
108,001
+19,601
+22% +$46K
ESCA icon
2872
Escalade
ESCA
$284M
$210K ﹤0.01%
15,530
WVVI icon
2873
Willamette Valley Vineyards
WVVI
$11.5M
$209K ﹤0.01%
68,652
-3,500
-5% -$10.9K
AOSL icon
2874
Alpha and Omega Semiconductor
AOSL
$1.09B
$208K ﹤0.01%
+10,500
New +$248K
JCTC
2875
Jewett-Cameron Trading
JCTC
$10.3M
$208K ﹤0.01%
92,328
-5,800
-6% -$15.9K

Similar funds

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.