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 | |
|---|---|---|---|---|---|---|
|
MGIC
1226
DELISTED
Magic Software Enterprises
MGIC
| $7.66M | 0.01% |
375,212
-2,600
| -0.7% | -$52.9K |
|
1227
Kura Oncology
KURA
$910M
| $7.66M | 0.01% |
865,310
-191,700
| -18% | -$1.37M |
|
1228
The RMR Group
RMR
$344M
| $7.66M | 0.01% |
486,714
-93,200
| -16% | -$1.56M |
|
1229
Bausch Health
BHC
$2.42B
| $7.64M | 0.01% |
1,184,672
+423,689
| +56% | +$2.9M |
|
1230
ZipRecruiter
ZIP
$381M
| $7.64M | 0.01% |
1,810,400
+115,800
| +7% | +$541K |
|
1231
Ternium
TX
$10.6B
| $7.63M | 0.01% |
219,700
-28,200
| -11% | -$925K |
|
|
CLDT
1232
Chatham Lodging
CLDT
$605M
| $7.62M | 0.01% |
1,136,175
-15,792
| -1% | -$113K |
|
1233
Flywire
FLYW
$2.25B
| $7.61M | 0.01% |
562,200
+164,864
| +41% | +$2.03M |
|
1234
Listed Funds Trust Roundhill Magnificent Seven ETF
MAGS
$4.2B
| $7.59M | 0.01% |
+117,000
| New | +$6.99M |
|
1235
Sylvamo
SLVM
$1.52B
| $7.57M | 0.01% |
171,300
-60,200
| -26% | -$2.79M |
|
1236
Kodiak Sciences
KOD
$2.54B
| $7.55M | 0.01% |
461,300
-302,837
| -40% | -$2.61M |
|
|
BFIN
1237
DELISTED
BankFinancial
BFIN
| $7.53M | 0.01% |
626,187
-12,909
| -2% | -$153K |
|
1238
Allient
ALNT
$1.9B
| $7.53M | 0.01% |
168,222
+21,150
| +14% | +$904K |
|
|
TSSI
1239
TSS Inc
TSSI
$270M
| $7.52M | 0.01% |
415,100
+101,600
| +32% | +$2.03M |
|
1240
Astronics
ATRO
$4.6B
| $7.51M | 0.01% |
197,520
-216,360
| -52% | -$6.58M |
|
|
ETNB
1241
DELISTED
89bio
ETNB
| $7.5M | 0.01% |
510,500
-2,900
| -0.6% | -$29.6K |
|
1242
Monolithic Power Systems
MPWR
$68.3B
| $7.44M | 0.01% |
+8,086
| New | +$6.56M |
|
1243
Gentherm
THRM
$1.35B
| $7.44M | 0.01% |
218,564
+29,100
| +15% | +$985K |
|
|
ALE
1244
DELISTED
Allete
ALE
| $7.44M | 0.01% |
111,999
-185,200
| -62% | -$12M |
|
1245
Timberland Bancorp
TSBK
$362M
| $7.42M | 0.01% |
222,989
+8,600
| +4% | +$285K |
|
1246
WSFS Financial
WSFS
$4.18B
| $7.42M | 0.01% |
137,548
-94,878
| -41% | -$5.36M |
|
1247
RE/MAX Holdings
RMAX
$281M
| $7.42M | 0.01% |
786,369
-11,500
| -1% | -$102K |
|
1248
Invesco S&P 500 Top 50 ETF
XLG
$11B
| $7.41M | 0.01% |
128,900
+117,200
| +1,002% | +$6.41M |
|
|
TDAY
1249
USA Today Co
TDAY
$1.02B
| $7.41M | 0.01% |
1,794,324
-316,600
| -15% | -$1.27M |
|
|
RAL
1250
Ralliant Corp
RAL
$7.94B
| $7.41M | 0.01% |
169,400
+23,603
| +16% | +$1.05M |
|
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.