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 | |
|---|---|---|---|---|---|---|
151
State Street SPDR S&P 500 ETF Trust
SPY
$807B
| $98.5M | 0.15% |
+144,480
| New | +$97.7M |
|
152
DexCom
DXCM
$33.8B
| $95.9M | 0.15% |
1,444,796
+603,232
| +72% | +$39M |
|
|
AMRZ
153
Amrize Ltd
AMRZ
$26B
| $95.9M | 0.15% |
1,772,700
+557,400
| +46% | +$28.4M |
|
154
Cinemark Holdings
CNK
$4.25B
| $95.7M | 0.15% |
4,117,385
-389,064
| -9% | -$10.2M |
|
155
D.R. Horton
DHI
$42.2B
| $95.6M | 0.15% |
+663,538
| New | +$101M |
|
156
Analog Devices
ADI
$188B
| $94.8M | 0.15% |
349,595
-264,100
| -43% | -$66.4M |
|
157
Ericsson
ERIC
$33B
| $94.6M | 0.15% |
9,803,336
-3,345,564
| -25% | -$31.7M |
|
158
Hewlett Packard
HPE
$72B
| $93.7M | 0.15% |
+3,899,000
| New | +$91.9M |
|
159
Copa Holdings
CPA
$5.49B
| $93.2M | 0.14% |
772,528
-114,900
| -13% | -$14.1M |
|
160
AutoZone
AZO
$49.7B
| $93.1M | 0.14% |
27,440
+5,040
| +23% | +$19M |
|
161
Hilton Worldwide
HLT
$70.8B
| $92.8M | 0.14% |
323,060
+154,360
| +91% | +$42M |
|
|
162
Alphabet (Google) Class A
GOOGL
$4.2T
| $92.8M | 0.14% |
296,470
-2,310,277
| -89% | -$660M |
|
163
BP
BP
$111B
| $92.5M | 0.14% |
2,663,167
+904,985
| +51% | +$31.7M |
|
164
Republic Services
RSG
$65.9B
| $91.4M | 0.14% |
431,461
+355,100
| +465% | +$76.4M |
|
165
Roper Technologies
ROP
$39.5B
| $91.1M | 0.14% |
204,700
-163,000
| -44% | -$75.5M |
|
166
Cenovus Energy
CVE
$55B
| $89.2M | 0.14% |
5,272,694
-224,493
| -4% | -$3.9M |
|
167
KeyCorp
KEY
$24.3B
| $88.4M | 0.14% |
4,281,151
+1,955,000
| +84% | +$36.4M |
|
168
Manhattan Associates
MANH
$11.4B
| $88.3M | 0.14% |
509,560
-32,900
| -6% | -$6.01M |
|
|
CUK
169
DELISTED
Carnival PLC
CUK
| $88.1M | 0.14% |
2,903,970
+425,870
| +17% | +$11M |
|
170
Intuitive Surgical
ISRG
$142B
| $86.6M | 0.13% |
152,830
-41,700
| -21% | -$22.2M |
|
|
FYBR
171
DELISTED
Frontier Communications
FYBR
| $86.4M | 0.13% |
2,268,200
+84,700
| +4% | +$3.2M |
|
172
Insulet
PODD
$10B
| $86.2M | 0.13% |
303,283
-87,610
| -22% | -$27.4M |
|
173
Supernus Pharmaceuticals
SUPN
$2.73B
| $86.1M | 0.13% |
1,732,522
-8,100
| -0.5% | -$394K |
|
174
Kimberly-Clark
KMB
$36.1B
| $85.9M | 0.13% |
851,200
+726,400
| +582% | +$79.4M |
|
175
Atour Lifestyle Holdings
ATAT
$4.63B
| $85.9M | 0.13% |
2,178,968
+256,600
| +13% | +$10.1M |
|
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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.