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 | |
|---|---|---|---|---|---|---|
4051
PUT
Lamar Advertising Co
LAMR
$16.5B
| $304K | ﹤0.01% |
2,500
+2,000
| +400% | +$261K |
|
4052
CALL
Sabra Healthcare REIT
SBRA
$5.61B
| $304K | ﹤0.01% |
17,600
-11,400
| -39% | -$208K |
|
|
SWTX
4053
DELISTED
SpringWorks Therapeutics
SWTX
| $304K | ﹤0.01% |
8,415
-14,659
| -64% | -$512K |
|
4054
Wendy's
WEN
$1.46B
| $304K | ﹤0.01% |
18,667
+1,630
| +10% | +$29.7K |
|
4055
Butterfly Network
BFLY
$1.88B
| $303K | ﹤0.01% |
+97,118
| New | +$253K |
|
|
PPLI
4056
People Inc
PPLI
$3.13B
| $303K | ﹤0.01% |
+8,567
| New | +$343K |
|
4057
PUT
ATI
ATI
$25.5B
| $302K | ﹤0.01% |
5,500
-95,300
| -95% | -$5.62M |
|
4058
CALL
Civeo
CVEO
$376M
| $302K | ﹤0.01% |
13,300
| – | – |
|
4059
Ryman Hospitality Properties
RHP
$8.58B
| $302K | ﹤0.01% |
2,902
-366
| -11% | -$40.7K |
|
4060
CALL
Verisk Analytics
VRSK
$27.8B
| $302K | ﹤0.01% |
1,100
+700
| +175% | +$195K |
|
4061
PUT
Banc of California
BANC
$3.27B
| $301K | ﹤0.01% |
19,500
-260,500
| -93% | -$4.11M |
|
|
4062
CALL
Butterfly Network
BFLY
$1.88B
| $300K | ﹤0.01% |
96,200
+14,900
| +18% | +$38.8K |
|
4063
NET Power
NPWR
$126M
| $300K | ﹤0.01% |
+28,387
| New | +$278K |
|
4064
CALL
Invesco DB Commodity Index Tracking Fund
DBC
$1.65B
| $299K | ﹤0.01% |
14,000
-4,100
| -23% | -$91.5K |
|
4065
PUT
Children's Place
PLCE
$55.8M
| $299K | ﹤0.01% |
28,600
-187,400
| -87% | -$2.46M |
|
|
DCH
4066
CALL
Dauch Corp
DCH
$1.33B
| $298K | ﹤0.01% |
51,200
-4,700
| -8% | -$29.4K |
|
4067
PUT
Costamare
CMRE
$1.86B
| $298K | ﹤0.01% |
23,200
+16,600
| +252% | +$228K |
|
4068
CALL
Ryder
R
$9.98B
| $298K | ﹤0.01% |
1,900
-19,700
| -91% | -$3.08M |
|
4069
CALL
Agilon Health
AGL
$1.65B
| $297K | ﹤0.01% |
6,264
-1,764
| -22% | -$107K |
|
4070
PUT
CorMedix
CRMD
$577M
| $297K | ﹤0.01% |
36,700
+17,200
| +88% | +$172K |
|
|
KALV
4071
DELISTED
KalVista Pharmaceuticals
KALV
| $297K | ﹤0.01% |
35,125
+33,041
| +1,585% | +$342K |
|
|
TUZ
4072
CALL
DELISTED
PIMCO 1-3 Year U.S. Treasury Index Exchange-Traded Fund
TUZ
| $297K | ﹤0.01% |
4,400
+3,500
| +389% | +$236K |
|
4073
Bit Digital
BTBT
$459M
| $296K | ﹤0.01% |
+101,086
| New | +$397K |
|
|
CAN
4074
PUT
Canaan Creative
CAN
$178M
| $296K | ﹤0.01% |
144,800
+59,600
| +70% | +$101K |
|
4075
PUT
EyePoint Inc
EYPT
$1B
| $296K | ﹤0.01% |
39,800
+9,500
| +31% | +$88.4K |
|
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.