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 | |
|---|---|---|---|---|---|---|
2526
Applied Optoelectronics
AAOI
$8.04B
| $1.4M | ﹤0.01% |
38,084
-18,042
| -32% | -$485K |
|
2527
PUT
PTC Therapeutics
PTCT
$6.37B
| $1.4M | ﹤0.01% |
31,100
+30,900
| +15,450% | +$1.32M |
|
|
2528
Boeing
BA
$165B
| $1.4M | ﹤0.01% |
7,914
-317,414
| -98% | -$49.8M |
|
2529
CALL
Parker-Hannifin
PH
$125B
| $1.4M | ﹤0.01% |
2,200
-10,500
| -83% | -$6.95M |
|
2530
PUT
Cerence
CRNC
$382M
| $1.4M | ﹤0.01% |
178,100
+172,400
| +3,025% | +$865K |
|
2531
CALL
Planet Labs
PL
$7.3B
| $1.4M | ﹤0.01% |
346,200
+317,600
| +1,110% | +$986K |
|
2532
PUT
Simplify US Equity PLUS Convexity ETF
SPYC
$109M
| $1.4M | ﹤0.01% |
69,700
-8,900
| -11% | -$344K |
|
2533
CALL
Upwork
UPWK
$1.09B
| $1.4M | ﹤0.01% |
85,500
-62,400
| -42% | -$899K |
|
2534
CALL
Medpace
MEDP
$16.8B
| $1.4M | ﹤0.01% |
4,200
+2,600
| +163% | +$882K |
|
|
ITCI
2535
PUT
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $1.39M | ﹤0.01% |
16,700
-200
| -1% | -$16.4K |
|
|
THS
2536
PUT
DELISTED
Treehouse Foods
THS
| $1.39M | ﹤0.01% |
+39,600
| New | +$1.44M |
|
2537
CALL
Kingstone Companies
KINS
$288M
| $1.39M | ﹤0.01% |
91,500
+78,000
| +578% | +$989K |
|
2538
CALL
Entergy
ETR
$54.1B
| $1.39M | ﹤0.01% |
18,300
+1,500
| +9% | +$108K |
|
2539
CALL
TechnipFMC
FTI
$30.6B
| $1.39M | ﹤0.01% |
47,900
+26,500
| +124% | +$754K |
|
2540
CALL
Amplify Energy
AMPY
$163M
| $1.38M | ﹤0.01% |
230,400
+110,700
| +92% | +$724K |
|
2541
CALL
Repligen
RGEN
$7.44B
| $1.38M | ﹤0.01% |
9,600
+700
| +8% | +$100K |
|
|
APLS
2542
PUT
DELISTED
Apellis Pharmaceuticals
APLS
| $1.38M | ﹤0.01% |
43,200
-61,300
| -59% | -$1.84M |
|
2543
PUT
Viasat
VSAT
$9.79B
| $1.37M | ﹤0.01% |
161,500
+102,300
| +173% | +$984K |
|
|
GOOS
2544
CALL
Canada Goose Holdings
GOOS
$868M
| $1.37M | ﹤0.01% |
136,900
+83,900
| +158% | +$857K |
|
2545
uniQure
QURE
$2.68B
| $1.37M | ﹤0.01% |
77,639
+36,647
| +89% | +$316K |
|
|
BRSL
2546
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $1.37M | ﹤0.01% |
77,600
+9,700
| +14% | +$191K |
|
2547
CALL
Brookfield
BN
$102B
| $1.37M | ﹤0.01% |
35,700
-19,200
| -35% | -$723K |
|
|
AKRO
2548
CALL
DELISTED
Akero Therapeutics
AKRO
| $1.36M | ﹤0.01% |
49,100
+16,300
| +50% | +$494K |
|
2549
CALL
Fortuna Silver Mines
FSM
$2.59B
| $1.36M | ﹤0.01% |
318,100
-70,700
| -18% | -$337K |
|
2550
PUT
Patterson-UTI
PTEN
$3.87B
| $1.36M | ﹤0.01% |
164,900
-6,500
| -4% | -$52.1K |
|
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.