Jim Simons Renaissance Technologies
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.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class A
GOOGL
|
+$546M |
| 2 |
Microsoft
MSFT
|
+$480M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$362M |
| 4 |
Meta Platforms (Facebook)
META
|
+$350M |
| 5 |
Coca-Cola
KO
|
+$266M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Robinhood
HOOD
|
+$1.04B |
| 2 |
Palantir
PLTR
|
+$800M |
| 3 |
Apple
AAPL
|
+$516M |
| 4 |
Netflix
NFLX
|
+$326M |
| 5 |
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 | |
|---|---|---|---|---|---|---|
1851
Alector
ALEC
$219M
| $2.81M | ﹤0.01% |
949,150
-305,700
| -24% | -$673K |
|
|
WCC
1852
WESCO International
WCC
$17.6B
| $2.81M | ﹤0.01% |
13,274
-134,100
| -91% | -$28.2M |
|
1853
Horizon Bancorp
HBNC
$1.06B
| $2.8M | ﹤0.01% |
174,581
-27,635
| -14% | -$443K |
|
1854
Northwest Bancshares
NWBI
$2.31B
| $2.79M | ﹤0.01% |
225,241
+22,542
| +11% | +$283K |
|
1855
MillerKnoll
MLKN
$1.62B
| $2.79M | ﹤0.01% |
157,083
-65,700
| -29% | -$1.33M |
|
1856
Oceaneering
OII
$5.2B
| $2.78M | ﹤0.01% |
112,300
+26,700
| +31% | +$612K |
|
|
VOXR
1857
Vox Royalty Corp
VOXR
$359M
| $2.78M | ﹤0.01% |
646,600
+103,492
| +19% | +$355K |
|
1858
Abeona Therapeutics
ABEO
$341M
| $2.78M | ﹤0.01% |
526,437
+226,500
| +76% | +$1.44M |
|
1859
Larimar Therapeutics
LRMR
$453M
| $2.77M | ﹤0.01% |
858,642
+296,900
| +53% | +$1.11M |
|
1860
Dimensional US Core Equity 2 ETF
DFAC
$49.9B
| $2.77M | ﹤0.01% |
71,900
+7,100
| +11% | +$265K |
|
|
INFA
1861
DELISTED
Informatica
INFA
| $2.77M | ﹤0.01% |
+111,500
| New | +$2.75M |
|
1862
Direxion Daily FTSE China Bull 3X ETF
YINN
$653M
| $2.77M | ﹤0.01% |
+51,000
| New | +$2.37M |
|
1863
Cytek Biosciences
CTKB
$610M
| $2.76M | ﹤0.01% |
795,544
-267,595
| -25% | -$1M |
|
1864
BlackRock US Equity Factor Rotation ETF
DYNF
$40.4B
| $2.76M | ﹤0.01% |
46,600
-60,600
| -57% | -$3.44M |
|
1865
Delcath Systems
DCTH
$581M
| $2.75M | ﹤0.01% |
256,200
+78,200
| +44% | +$873K |
|
1866
Eastern Company
EML
$153M
| $2.74M | ﹤0.01% |
116,636
+1,499
| +1% | +$35.5K |
|
1867
Natural Health Trends
NHTC
$15.5M
| $2.73M | ﹤0.01% |
611,315
-10,100
| -2% | -$45.9K |
|
1868
Culp Inc
CULP
$41.9M
| $2.73M | ﹤0.01% |
612,917
-1,200
| -0.2% | -$5.21K |
|
1869
Shutterstock
SSTK
$210M
| $2.73M | ﹤0.01% |
131,001
+69,900
| +114% | +$1.42M |
|
1870
Spero Therapeutics
SPRO
$71.2M
| $2.73M | ﹤0.01% |
1,452,765
+620,600
| +75% | +$1.36M |
|
1871
Turkcell
TKC
$4.75B
| $2.73M | ﹤0.01% |
453,185
+88,285
| +24% | +$516K |
|
1872
4D Molecular Therapeutics
FDMT
$637M
| $2.72M | ﹤0.01% |
313,186
+196,633
| +169% | +$1.18M |
|
1873
Definitive Healthcare
DH
$68.2M
| $2.72M | ﹤0.01% |
670,240
-33,191
| -5% | -$133K |
|
1874
Tenaya Therapeutics
TNYA
$163M
| $2.72M | ﹤0.01% |
1,678,202
-165,677
| -9% | -$167K |
|
1875
Rush Enterprises Class A
RUSHA
$9.6B
| $2.72M | ﹤0.01% |
50,800
-21,700
| -30% | -$1.21M |
|
Similar funds
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.