Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$552M |
| 2 |
Strategy Inc
MSTR
|
+$85.8M |
| 3 |
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
|
+$48.1M |
| 4 |
Intel
INTC
|
+$45.4M |
| 5 |
Uber
UBER
|
+$43M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$133M |
| 2 |
Pinduoduo
PDD
|
+$82.6M |
| 3 |
Boeing
BA
|
+$49.8M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$45.1M |
| 5 |
Microsoft
MSFT
|
+$41M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.68% |
| 2 | Consumer Discretionary | 0.23% |
| 3 | Healthcare | 0.19% |
| 4 | Financials | 0.13% |
| 5 | Communication Services | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
TUYA
6176
CALL
Tuya Inc
TUYA
$1.03B
| $37K | ﹤0.01% |
+20,800
| New | +$35K |
|
6177
PUT
Unisys
UIS
$209M
| $37K | ﹤0.01% |
5,900
-100
| -2% | -$697 |
|
6178
CALL
Upbound Group
UPBD
$1.13B
| $37K | ﹤0.01% |
1,300
-900
| -41% | -$27.9K |
|
|
VRE
6179
DELISTED
Veris Residential
VRE
| $37K | ﹤0.01% |
2,283
-1,748
| -43% | -$30.5K |
|
6180
CALL
VirTra
VTSI
$34.9M
| $37K | ﹤0.01% |
5,500
-4,000
| -42% | -$27K |
|
|
ME
6181
PUT
DELISTED
23andMe Holding Co
ME
| $37K | ﹤0.01% |
+11,500
| New | +$49.9K |
|
6182
CALL
Alarm.com
ALRM
$2.71B
| $36K | ﹤0.01% |
600
-600
| -50% | -$35.7K |
|
6183
PUT
Ametek
AME
$55.4B
| $36K | ﹤0.01% |
200
-300
| -60% | -$54.6K |
|
6184
CALL
Credicorp
BAP
$31.8B
| $36K | ﹤0.01% |
200
-8,100
| -98% | -$1.51M |
|
6185
CALL
Certara
CERT
$1.26B
| $36K | ﹤0.01% |
3,400
+3,300
| +3,300% | +$35.8K |
|
6186
CALL
Vita Coco
COCO
$3.82B
| $36K | ﹤0.01% |
1,000
-9,900
| -91% | -$330K |
|
6187
PUT
Carlisle Companies
CSL
$14.3B
| $36K | ﹤0.01% |
100
-4,000
| -98% | -$1.74M |
|
6188
CALL
DTE Energy
DTE
$29.5B
| $36K | ﹤0.01% |
300
-2,100
| -88% | -$259K |
|
6189
PUT
Editas Medicine
EDIT
$396M
| $36K | ﹤0.01% |
29,000
-100
| -0.3% | -$255 |
|
6190
CALL
Excelerate Energy
EE
$1.25B
| $36K | ﹤0.01% |
1,200
+100
| +9% | +$2.71K |
|
6191
LENSAR
LNSR
$61.5M
| $36K | ﹤0.01% |
4,055
-7,032
| -63% | -$46.6K |
|
6192
MasterCraft Boat Holdings
MCFT
$579M
| $36K | ﹤0.01% |
+1,896
| New | +$36.3K |
|
6193
PUT
NiSource
NI
$21.3B
| $36K | ﹤0.01% |
1,000
-13,200
| -93% | -$474K |
|
|
TEAD
6194
Teads Holding Co
TEAD
$68.7M
| $36K | ﹤0.01% |
+5,078
| New | +$27.7K |
|
6195
Oaktree Specialty Lending
OCSL
$1.02B
| $36K | ﹤0.01% |
2,366
-10,277
| -81% | -$165K |
|
6196
CALL
Red Violet
RDVT
$979M
| $36K | ﹤0.01% |
+1,000
| New | +$33.3K |
|
6197
PUT
Real Brokerage
REAX
$349M
| $36K | ﹤0.01% |
8,000
-200
| -2% | -$1.05K |
|
6198
CALL
Replimune Group
REPL
$941M
| $36K | ﹤0.01% |
3,000
+1,300
| +76% | +$15.8K |
|
|
SAFE
6199
Safehold
SAFE
$1.16B
| $36K | ﹤0.01% |
+1,997
| New | +$43.4K |
|
|
SOL
6200
CALL
DELISTED
Emeren Group
SOL
| $36K | ﹤0.01% |
18,000
-7,700
| -30% | -$17K |
|
Similar funds
Simplex Trading's Q4 2024 Portfolio in Review
As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.
Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.
By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
- Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
- Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
- Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
- Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
- Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
- Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.
Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.