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 | |
|---|---|---|---|---|---|---|
726
Nomura Holdings
NMR
$29.2B
| $15.3M | 0.02% |
1,820,837
-637,000
| -26% | -$4.76M |
|
727
Aflac
AFL
$60.7B
| $15.3M | 0.02% |
138,500
-626,500
| -82% | -$69M |
|
728
Xcel Energy
XEL
$49.3B
| $15.2M | 0.02% |
+206,100
| New | +$16.3M |
|
729
Granite Construction
GVA
$5.41B
| $15.2M | 0.02% |
131,865
+123,165
| +1,416% | +$13.2M |
|
730
Brookfield Asset Management
BAM
$89.2B
| $15.1M | 0.02% |
+287,525
| New | +$15.5M |
|
731
Monarch Casino & Resort
MCRI
$2.2B
| $15.1M | 0.02% |
157,300
-25,200
| -14% | -$2.42M |
|
732
Intellia Therapeutics
NTLA
$1.66B
| $15M | 0.02% |
1,672,700
+1,021,700
| +157% | +$14.1M |
|
|
SGI
733
Somnigroup International
SGI
$14B
| $15M | 0.02% |
+168,400
| New | +$14.7M |
|
|
EFOR
734
Everforth Inc
EFOR
$1.37B
| $15M | 0.02% |
310,494
+98,000
| +46% | +$4.52M |
|
735
Rio Tinto
RIO
$160B
| $14.9M | 0.02% |
186,600
-1,024,200
| -85% | -$73.7M |
|
736
Take-Two Interactive
TTWO
$45.2B
| $14.9M | 0.02% |
58,239
-383,200
| -87% | -$95.5M |
|
737
UFP Industries
UFPI
$5.03B
| $14.9M | 0.02% |
163,709
-42,000
| -20% | -$3.85M |
|
738
Fortuna Silver Mines
FSM
$3.1B
| $14.9M | 0.02% |
1,517,600
-708,600
| -32% | -$6.38M |
|
739
OR Royalties Inc
OR
$6.15B
| $14.9M | 0.02% |
420,602
-160,100
| -28% | -$5.61M |
|
740
Automatic Data Processing
ADP
$110B
| $14.9M | 0.02% |
57,820
+51,820
| +864% | +$13.8M |
|
741
LSB Industries
LXU
$711M
| $14.8M | 0.02% |
1,745,893
-54,500
| -3% | -$481K |
|
742
Omnicell
OMCL
$1.72B
| $14.8M | 0.02% |
326,843
+46,243
| +16% | +$1.69M |
|
743
CEMIG Preferred Shares
CIG
$5.58B
| $14.8M | 0.02% |
7,385,748
-888,901
| -11% | -$1.82M |
|
744
Planet Labs
PL
$8.82B
| $14.7M | 0.02% |
747,880
+279,880
| +60% | +$4.01M |
|
745
LSI Industries
LYTS
$912M
| $14.7M | 0.02% |
804,052
-34,440
| -4% | -$700K |
|
|
RAL
746
Ralliant Corp
RAL
$7.9B
| $14.7M | 0.02% |
288,502
+119,102
| +70% | +$5.58M |
|
747
Omega Healthcare
OHI
$13.9B
| $14.7M | 0.02% |
331,051
-211,427
| -39% | -$9.11M |
|
748
ThredUp
TDUP
$416M
| $14.7M | 0.02% |
2,292,853
+12,127
| +0.5% | +$98.1K |
|
749
LeMaitre Vascular
LMAT
$1.87B
| $14.6M | 0.02% |
180,502
-100
| -0.1% | -$8.61K |
|
|
LIF
750
Life360
LIF
$4.09B
| $14.6M | 0.02% |
227,800
+148,700
| +188% | +$12.4M |
|
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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.