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 | |
|---|---|---|---|---|---|---|
|
SPR
1751
CALL
DELISTED
Spirit AeroSystems
SPR
| $3.41M | ﹤0.01% |
100,000
-105,000
| -51% | -$3.39M |
|
1752
PUT
ZTO Express
ZTO
$18.2B
| $3.41M | ﹤0.01% |
174,300
+76,600
| +78% | +$1.68M |
|
1753
PUT
Kyndryl
KD
$2.66B
| $3.4M | ﹤0.01% |
98,300
+33,000
| +51% | +$961K |
|
1754
PUT
AeroVironment
AVAV
$7.57B
| $3.4M | ﹤0.01% |
22,100
+11,700
| +113% | +$2.29M |
|
1755
Global Ship Lease
GSL
$1.57B
| $3.4M | ﹤0.01% |
155,752
+143,024
| +1,124% | +$3.34M |
|
1756
Global X Blockchain & Bitcoin Strategy ETF
BITS
$23.8M
| $3.4M | ﹤0.01% |
+50,823
| New | +$4.23M |
|
1757
CALL
Mativ Holdings
MATV
$448M
| $3.4M | ﹤0.01% |
311,800
-34,400
| -10% | -$480K |
|
1758
Advance Auto Parts
AAP
$3.37B
| $3.39M | ﹤0.01% |
71,791
+23,508
| +49% | +$957K |
|
|
BCPC
1759
CALL
Balchem Corp
BCPC
$5.23B
| $3.39M | ﹤0.01% |
20,800
-400
| -2% | -$69.4K |
|
1760
CALL
Galicia Financial Group
GGAL
$7.92B
| $3.38M | ﹤0.01% |
54,300
-182,700
| -77% | -$10.1M |
|
|
DFS
1761
CALL
DELISTED
Discover Financial Services
DFS
| $3.38M | ﹤0.01% |
19,500
-1,800
| -8% | -$295K |
|
1762
CALL
Elanco Animal Health
ELAN
$12.4B
| $3.37M | ﹤0.01% |
278,300
+77,800
| +39% | +$1.02M |
|
1763
PUT
Louisiana-Pacific
LPX
$5.2B
| $3.37M | ﹤0.01% |
32,500
+18,000
| +124% | +$1.96M |
|
1764
Cenovus Energy
CVE
$54.6B
| $3.36M | ﹤0.01% |
222,053
+43,100
| +24% | +$693K |
|
1765
CALL
Valaris
VAL
$5.51B
| $3.36M | ﹤0.01% |
76,000
+11,500
| +18% | +$554K |
|
1766
CALL
Hilton Worldwide
HLT
$74B
| $3.36M | ﹤0.01% |
13,600
+3,700
| +37% | +$906K |
|
1767
CALL
Wabtec
WAB
$51.1B
| $3.35M | ﹤0.01% |
17,700
+500
| +3% | +$96.8K |
|
1768
PUT
Timken Company
TKR
$9.82B
| $3.35M | ﹤0.01% |
47,000
-4,100
| -8% | -$322K |
|
1769
CALL
AdaptHealth
AHCO
$1.46B
| $3.35M | ﹤0.01% |
352,300
-15,900
| -4% | -$161K |
|
1770
PUT
Kodak
KODK
$806M
| $3.35M | ﹤0.01% |
509,900
+497,300
| +3,947% | +$2.82M |
|
1771
Nutanix
NTNX
$14.9B
| $3.34M | ﹤0.01% |
+54,639
| New | +$3.57M |
|
|
GRMN
1772
PUT
Garmin
GRMN
$46.9B
| $3.34M | ﹤0.01% |
16,200
-1,400
| -8% | -$275K |
|
1773
PUT
Franco-Nevada
FNV
$41.4B
| $3.34M | ﹤0.01% |
28,400
-64,800
| -70% | -$8.02M |
|
1774
PUT
Iovance Biotherapeutics
IOVA
$2.23B
| $3.33M | ﹤0.01% |
450,800
+81,100
| +22% | +$752K |
|
1775
PUT
Southern Copper
SCCO
$141B
| $3.33M | ﹤0.01% |
38,633
-6,187
| -14% | -$618K |
|
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.