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 | |
|---|---|---|---|---|---|---|
2476
Louisiana-Pacific
LPX
$5.2B
| $1.47M | ﹤0.01% |
+14,197
| New | +$1.54M |
|
2477
Vanguard Small-Cap ETF
VB
$79.5B
| $1.47M | ﹤0.01% |
+6,122
| New | +$1.51M |
|
2478
GraniteShares 2x Long COIN Daily ETF
CONL
$510M
| $1.47M | ﹤0.01% |
41,634
+32,639
| +363% | +$1.41M |
|
2479
CALL
Nextpower Inc
NXT
$15.2B
| $1.47M | ﹤0.01% |
40,200
-129,900
| -76% | -$4.76M |
|
2480
PUT
Gogo Inc
GOGO
$515M
| $1.47M | ﹤0.01% |
181,400
+152,400
| +526% | +$1.14M |
|
|
LOGC
2481
PUT
DELISTED
ContextLogic
LOGC
| $1.47M | ﹤0.01% |
208,600
+128,900
| +162% | +$857K |
|
2482
PUT
Bank of Montreal
BMO
$125B
| $1.47M | ﹤0.01% |
15,100
-48,200
| -76% | -$4.56M |
|
2483
CALL
Melco Resorts & Entertainment
MLCO
$2.1B
| $1.47M | ﹤0.01% |
253,100
-82,300
| -25% | -$555K |
|
2484
CALL
Alight
ALIT
$497M
| $1.46M | ﹤0.01% |
10,585
+8,760
| +480% | +$1.29M |
|
2485
CALL
Kratos Defense & Security Solutions
KTOS
$8.88B
| $1.46M | ﹤0.01% |
55,500
-4,700
| -8% | -$120K |
|
2486
GameStop
GME
$9.5B
| $1.46M | ﹤0.01% |
+46,687
| New | +$1.2M |
|
2487
PUT
Knight Transportation
KNX
$11.8B
| $1.46M | ﹤0.01% |
27,600
+300
| +1% | +$16.3K |
|
2488
PUT
Corcept Therapeutics
CORT
$10.2B
| $1.46M | ﹤0.01% |
29,000
-19,000
| -40% | -$996K |
|
2489
CALL
Texas Roadhouse
TXRH
$12.7B
| $1.46M | ﹤0.01% |
8,100
-29,100
| -78% | -$5.48M |
|
2490
CALL
American Healthcare REIT
AHR
$11.1B
| $1.46M | ﹤0.01% |
51,400
-177,900
| -78% | -$4.79M |
|
|
HIVE
2491
CALL
HIVE Digital Technologies
HIVE
$792M
| $1.46M | ﹤0.01% |
512,100
+211,600
| +70% | +$793K |
|
2492
Altria Group
MO
$122B
| $1.46M | ﹤0.01% |
+27,915
| New | +$1.49M |
|
2493
CALL
Steris
STE
$20.9B
| $1.46M | ﹤0.01% |
7,100
+5,000
| +238% | +$1.1M |
|
2494
PUT
Saia
SAIA
$11.3B
| $1.46M | ﹤0.01% |
3,200
-6,200
| -66% | -$3.07M |
|
2495
CALL
Gentex
GNTX
$4.88B
| $1.46M | ﹤0.01% |
50,700
-8,000
| -14% | -$239K |
|
2496
PUT
CACI
CACI
$10.8B
| $1.45M | ﹤0.01% |
3,600
-1,200
| -25% | -$585K |
|
2497
PUT
Fidelity National Financial
FNF
$13.9B
| $1.45M | ﹤0.01% |
25,900
+24,200
| +1,424% | +$1.46M |
|
2498
CALL
SunCoke Energy
SXC
$757M
| $1.45M | ﹤0.01% |
135,900
+129,400
| +1,991% | +$1.39M |
|
|
VRNA
2499
CALL
DELISTED
Verona Pharma
VRNA
| $1.45M | ﹤0.01% |
31,300
-24,500
| -44% | -$920K |
|
2500
PUT
Global E Online
GLBE
$6.08B
| $1.45M | ﹤0.01% |
26,600
-35,400
| -57% | -$1.6M |
|
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.