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 | |
|---|---|---|---|---|---|---|
2551
PUT
Camping World
CWH
$363M
| $1.36M | ﹤0.01% |
64,600
+28,200
| +77% | +$643K |
|
2552
PUT
MP Materials
MP
$7.35B
| $1.36M | ﹤0.01% |
87,100
+11,600
| +15% | +$215K |
|
2553
CALL
Q2 Holdings
QTWO
$3.42B
| $1.36M | ﹤0.01% |
13,500
+6,900
| +105% | +$655K |
|
2554
PUT
Kanzhun
BZ
$6.89B
| $1.35M | ﹤0.01% |
98,200
+57,600
| +142% | +$848K |
|
2555
PUT
NextNav
NN
$1.7B
| $1.35M | ﹤0.01% |
87,000
+44,900
| +107% | +$598K |
|
2556
CALL
California Resources
CRC
$4.75B
| $1.35M | ﹤0.01% |
26,000
-18,600
| -42% | -$1.01M |
|
2557
CALL
DHT Holdings
DHT
$2.97B
| $1.35M | ﹤0.01% |
145,300
-27,000
| -16% | -$277K |
|
|
SNV
2558
CALL
DELISTED
Synovus
SNV
| $1.35M | ﹤0.01% |
26,300
-18,000
| -41% | -$933K |
|
|
CRON
2559
CALL
Cronos Group
CRON
$1.05B
| $1.35M | ﹤0.01% |
666,700
+237,800
| +55% | +$496K |
|
2560
CALL
Acuity Brands
AYI
$9.88B
| $1.34M | ﹤0.01% |
4,600
+3,600
| +360% | +$1.12M |
|
2561
RTX Corp
RTX
$287B
| $1.34M | ﹤0.01% |
+11,594
| New | +$1.4M |
|
2562
CALL
Dycom Industries
DY
$12.9B
| $1.34M | ﹤0.01% |
7,700
+4,600
| +148% | +$851K |
|
2563
Edgewise Therapeutics
EWTX
$4.39B
| $1.34M | ﹤0.01% |
50,130
-23,900
| -32% | -$761K |
|
2564
PUT
Rithm Capital
RITM
$5.09B
| $1.34M | ﹤0.01% |
123,600
+22,500
| +22% | +$244K |
|
2565
CALL
Wendy's
WEN
$1.33B
| $1.34M | ﹤0.01% |
82,000
-44,300
| -35% | -$809K |
|
2566
PUT
CoStar Group
CSGP
$11.3B
| $1.33M | ﹤0.01% |
18,600
-11,100
| -37% | -$838K |
|
2567
CALL
Woodward
WWD
$25B
| $1.33M | ﹤0.01% |
8,000
+3,900
| +95% | +$666K |
|
2568
CALL
Thor Industries
THO
$3.99B
| $1.33M | ﹤0.01% |
13,900
-31,600
| -69% | -$3.37M |
|
2569
CALL
Biohaven
BHVN
$2.16B
| $1.33M | ﹤0.01% |
35,600
+1,300
| +4% | +$60.7K |
|
2570
CALL
Revolution Medicines
RVMD
$40.2B
| $1.33M | ﹤0.01% |
30,400
+27,500
| +948% | +$1.39M |
|
2571
PUT
Carlyle Group
CG
$16.3B
| $1.33M | ﹤0.01% |
26,300
-48,400
| -65% | -$2.45M |
|
|
HBI
2572
PUT
DELISTED
Hanesbrands
HBI
| $1.33M | ﹤0.01% |
162,900
-74,300
| -31% | -$585K |
|
|
HOLX
2573
DELISTED
Hologic
HOLX
| $1.32M | ﹤0.01% |
18,382
+6,153
| +50% | +$481K |
|
2574
iShares 3-7 Year Treasury Bond ETF
IEI
$18.1B
| $1.32M | ﹤0.01% |
11,471
+6,181
| +117% | +$721K |
|
2575
PUT
Ryman Hospitality Properties
RHP
$8.4B
| $1.32M | ﹤0.01% |
12,700
-1,400
| -10% | -$156K |
|
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.