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 | |
|---|---|---|---|---|---|---|
301
DNOW Inc
DNOW
$3.06B
| $57.8M | 0.08% |
3,788,914
+93,200
| +3% | +$1.41M |
|
302
Pinterest
PINS
$13.1B
| $57.7M | 0.08% |
1,794,871
-643,915
| -26% | -$23.4M |
|
303
PTC Therapeutics
PTCT
$6.15B
| $56.9M | 0.08% |
927,300
-36,000
| -4% | -$1.88M |
|
304
Johnson & Johnson
JNJ
$623B
| $56.9M | 0.08% |
306,747
-576,443
| -65% | -$98.8M |
|
305
DexCom
DXCM
$33.8B
| $56.6M | 0.07% |
841,564
+143,762
| +21% | +$11.4M |
|
306
EPR Properties
EPR
$4.6B
| $56.6M | 0.07% |
975,823
-601,794
| -38% | -$33.8M |
|
307
Takeda Pharmaceutical
TAK
$55.7B
| $56.6M | 0.07% |
3,864,600
+565,400
| +17% | +$8.4M |
|
308
NIO
NIO
$11.5B
| $56.5M | 0.07% |
7,413,440
-876,000
| -11% | -$4.72M |
|
309
Herbalife
HLF
$1.23B
| $56.5M | 0.07% |
6,688,468
-215,600
| -3% | -$2.03M |
|
310
WD-40
WDFC
$3.12B
| $56.4M | 0.07% |
285,561
+7,300
| +3% | +$1.58M |
|
311
Veeva Systems
VEEV
$38.2B
| $56M | 0.07% |
188,000
-324,600
| -63% | -$91.4M |
|
312
Collegium Pharmaceutical
COLL
$835M
| $56M | 0.07% |
1,599,189
+78,019
| +5% | +$2.71M |
|
313
FirstEnergy
FE
$27.1B
| $55.9M | 0.07% |
1,220,808
+302,608
| +33% | +$12.9M |
|
314
Watsco Inc
WSO
$13.1B
| $55.9M | 0.07% |
138,200
+89,500
| +184% | +$38.3M |
|
315
D-Wave Quantum Inc. Common Stock
QBTS
$7.66B
| $55.7M | 0.07% |
2,253,542
-1,537,800
| -41% | -$28M |
|
316
Intercontinental Exchange
ICE
$84.4B
| $55.4M | 0.07% |
328,839
+68,717
| +26% | +$12.3M |
|
317
Madrigal Pharmaceuticals
MDGL
$12.4B
| $55.4M | 0.07% |
120,682
+109,846
| +1,014% | +$41M |
|
318
Trade Desk
TTD
$6.21B
| $55.3M | 0.07% |
1,127,600
+1,022,046
| +968% | +$64.9M |
|
319
iShares 0-5 Year TIPS Bond ETF
STIP
$15.9B
| $55.2M | 0.07% |
534,400
-77,700
| -13% | -$8.01M |
|
320
Rhythm Pharmaceuticals
RYTM
$7.94B
| $55.2M | 0.07% |
546,593
+231,700
| +74% | +$21.5M |
|
321
LegalZoom.com
LZ
$915M
| $55.1M | 0.07% |
5,309,955
+307,805
| +6% | +$3.07M |
|
322
Pacira BioSciences
PCRX
$964M
| $55.1M | 0.07% |
2,138,201
-257,400
| -11% | -$6.32M |
|
323
IDT Corp
IDT
$1.66B
| $55.1M | 0.07% |
1,052,506
-47,333
| -4% | -$2.95M |
|
|
VISN
324
Vistance Networks Inc
VISN
$2.74B
| $55M | 0.07% |
3,550,900
-220,100
| -6% | -$2.86M |
|
|
HSII
325
DELISTED
Heidrick & Struggles
HSII
| $54.6M | 0.07% |
1,096,340
-5,400
| -0.5% | -$260K |
|
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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.