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 | |
|---|---|---|---|---|---|---|
1626
PUT
Progressive
PGR
$124B
| $4.07M | ﹤0.01% |
17,000
-21,900
| -56% | -$5.51M |
|
1627
CALL
Tradeweb Markets
TW
$21.3B
| $4.06M | ﹤0.01% |
31,000
+23,900
| +337% | +$3.15M |
|
1628
CALL
Capricor Therapeutics
CAPR
$1.14B
| $4.05M | ﹤0.01% |
293,900
+122,800
| +72% | +$2.15M |
|
1629
CALL
AeroVironment
AVAV
$7.57B
| $4.05M | ﹤0.01% |
26,300
+9,000
| +52% | +$1.76M |
|
|
HAPN
1630
CALL
Happen Inc
HAPN
$2.08B
| $4.04M | ﹤0.01% |
249,900
+118,400
| +90% | +$1.74M |
|
1631
CALL
Clear Secure
YOU
$5.26B
| $4.04M | ﹤0.01% |
151,800
-95,500
| -39% | -$2.88M |
|
|
OS
1632
CALL
DELISTED
OneStream Inc
OS
| $4.04M | ﹤0.01% |
141,700
+141,500
| +70,750% | +$4.34M |
|
1633
CALL
LKQ Corp
LKQ
$6.58B
| $4.04M | ﹤0.01% |
109,800
+54,500
| +99% | +$2.08M |
|
1634
CALL
Dutch Bros
BROS
$8.78B
| $4.03M | ﹤0.01% |
77,000
-53,800
| -41% | -$2.37M |
|
1635
PUT
Capri Holdings
CPRI
$1.77B
| $4.03M | ﹤0.01% |
191,500
+88,500
| +86% | +$2.41M |
|
|
HES
1636
PUT
DELISTED
Hess
HES
| $4.03M | ﹤0.01% |
30,300
-12,600
| -29% | -$1.76M |
|
1637
PUT
Invitation Homes
INVH
$17.7B
| $4.03M | ﹤0.01% |
125,900
-142,600
| -53% | -$4.76M |
|
|
DENT
1638
PUT
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $4.03M | ﹤0.01% |
1,049,000
+322,000
| +44% | +$1.24M |
|
1639
CALL
Entegris
ENTG
$19.7B
| $4.02M | ﹤0.01% |
40,600
+7,100
| +21% | +$749K |
|
1640
PUT
Toyota
TM
$210B
| $4.01M | ﹤0.01% |
20,600
-22,300
| -52% | -$3.92M |
|
1641
PUT
Applied Digital
APLD
$7.77B
| $4M | ﹤0.01% |
523,700
+343,900
| +191% | +$2.86M |
|
1642
Tyson Foods
TSN
$20.2B
| $3.99M | ﹤0.01% |
69,410
-8,947
| -11% | -$540K |
|
1643
Golar LNG
GLNG
$4.95B
| $3.97M | ﹤0.01% |
93,897
-59,410
| -39% | -$2.32M |
|
1644
Vistra
VST
$55.1B
| $3.97M | ﹤0.01% |
28,811
-65,111
| -69% | -$9.04M |
|
1645
CALL
Symbotic
SYM
$5.11B
| $3.97M | ﹤0.01% |
167,500
-41,300
| -20% | -$1.17M |
|
1646
PUT
Summit Therapeutics
SMMT
$10.9B
| $3.97M | ﹤0.01% |
222,300
-32,100
| -13% | -$622K |
|
1647
CALL
Ambarella
AMBA
$2.99B
| $3.96M | ﹤0.01% |
54,500
+12,800
| +31% | +$816K |
|
1648
CALL
Franco-Nevada
FNV
$41.4B
| $3.96M | ﹤0.01% |
33,700
-37,800
| -53% | -$4.68M |
|
1649
CALL
Jack in the Box
JACK
$278M
| $3.95M | ﹤0.01% |
94,900
+31,700
| +50% | +$1.46M |
|
1650
Chewy
CHWY
$8.54B
| $3.94M | ﹤0.01% |
117,820
-27,404
| -19% | -$852K |
|
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.