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 |
Costco
COST
|
+$616M |
| 2 |
Netflix
NFLX
|
+$481M |
| 3 |
Micron Technology
MU
|
+$416M |
| 4 |
Tesla
TSLA
|
+$416M |
| 5 |
Procter & Gamble
PG
|
+$322M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$885M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$660M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$463M |
| 4 |
Applovin
APP
|
+$430M |
| 5 |
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 | |
|---|---|---|---|---|---|---|
2376
ARK Autonomous Technology & Robotics ETF
ARKQ
$2.09B
| $814K | ﹤0.01% |
7,100
-14,400
| -67% | -$1.66M |
|
2377
Krystal Biotech
KRYS
$9.72B
| $814K | ﹤0.01% |
+3,300
| New | +$695K |
|
2378
Flotek Industries
FTK
$1.25B
| $810K | ﹤0.01% |
47,000
-321,800
| -87% | -$5.11M |
|
2379
iShares MBS ETF
MBB
$39.2B
| $799K | ﹤0.01% |
+8,386
| New | +$800K |
|
2380
Aligos Therapeutics
ALGS
$42.3M
| $796K | ﹤0.01% |
85,444
+30,425
| +55% | +$287K |
|
|
EEX
2381
DELISTED
Emerald Holding
EEX
| $792K | ﹤0.01% |
177,163
-10,594
| -6% | -$45.6K |
|
2382
Aura Biosciences
AURA
$791M
| $791K | ﹤0.01% |
145,200
+47,592
| +49% | +$283K |
|
|
DOYU
2383
DouYu International Holdings
DOYU
$136M
| $791K | ﹤0.01% |
116,338
-5,100
| -4% | -$35.5K |
|
2384
JPMorgan Hedged Equity Laddered Overlay ETF
HELO
$4.75B
| $791K | ﹤0.01% |
11,900
-23,820
| -67% | -$1.56M |
|
2385
Prelude Therapeutics
PRLD
$428M
| $787K | ﹤0.01% |
271,300
-272,700
| -50% | -$460K |
|
2386
Citizens Community Bancorp
CZWI
$204M
| $786K | ﹤0.01% |
44,100
+2,400
| +6% | +$40.2K |
|
|
YRD
2387
Yiren Digital
YRD
$105M
| $784K | ﹤0.01% |
211,865
-14,800
| -7% | -$75.6K |
|
2388
Braskem
BAK
$825M
| $783K | ﹤0.01% |
265,488
+228,588
| +619% | +$626K |
|
2389
JPMorgan Active Value ETF
JAVA
$7.2B
| $782K | ﹤0.01% |
10,900
-1,800
| -14% | -$126K |
|
2390
Arcus Biosciences
RCUS
$3.67B
| $779K | ﹤0.01% |
32,700
-186,600
| -85% | -$3.81M |
|
2391
Apyx Medical
APYX
$128M
| $771K | ﹤0.01% |
220,395
-1,302
| -0.6% | -$4.54K |
|
2392
SKYX Platforms
SKYX
$148M
| $771K | ﹤0.01% |
355,213
+313,013
| +742% | +$558K |
|
2393
Ameresco
AMRC
$1.47B
| $769K | ﹤0.01% |
+26,250
| New | +$921K |
|
2394
Universal Electronics
UEIC
$66.6M
| $768K | ﹤0.01% |
212,652
+55,929
| +36% | +$204K |
|
2395
Dimensional US Core Equity Market ETF
DFAU
$12.9B
| $768K | ﹤0.01% |
16,400
-8,500
| -34% | -$394K |
|
2396
CoreCivic
CXW
$3.13B
| $766K | ﹤0.01% |
40,103
-153,000
| -79% | -$2.8M |
|
2397
NLI Holdings
NL
$319M
| $766K | ﹤0.01% |
140,014
-9,500
| -6% | -$54.2K |
|
2398
Lesaka Technologies
LSAK
$414M
| $760K | ﹤0.01% |
159,400
-2,600
| -2% | -$10.8K |
|
2399
Avnet
AVT
$7.87B
| $760K | ﹤0.01% |
+15,800
| New | +$777K |
|
2400
Schneider National
SNDR
$6.37B
| $759K | ﹤0.01% |
28,600
-72,000
| -72% | -$1.7M |
|
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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.