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 | |
|---|---|---|---|---|---|---|
251
CALL
Coca-Cola
KO
$355B
| $65M | 0.04% |
1,044,500
-182,500
| -15% | -$11.9M |
|
252
PUT
Ulta Beauty
ULTA
$20.7B
| $64.5M | 0.04% |
148,300
+2,900
| +2% | +$1.12M |
|
253
CALL
FedEx
FDX
$76.2B
| $63.9M | 0.04% |
227,100
+37,300
| +20% | +$10.4M |
|
254
PUT
Sea Limited
SE
$64.2B
| $63.7M | 0.04% |
600,600
+186,000
| +45% | +$19.5M |
|
255
PUT
Autodesk
ADSK
$43.3B
| $63.5M | 0.04% |
215,000
+122,600
| +133% | +$36.2M |
|
|
KFYP
256
PUT
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $63.4M | 0.04% |
2,256,900
-1,920,700
| -46% | -$54M |
|
257
PUT
Procter & Gamble
PG
$348B
| $63.1M | 0.04% |
376,500
-270,300
| -42% | -$46M |
|
258
CALL
Rivian
RIVN
$25.4B
| $62.2M | 0.03% |
4,679,200
+1,802,900
| +63% | +$20.7M |
|
259
PUT
United States Oil Fund
USO
$2.36B
| $61.9M | 0.03% |
819,700
+561,800
| +218% | +$41.1M |
|
260
CALL
Merck
MRK
$317B
| $61.8M | 0.03% |
621,200
+147,300
| +31% | +$15.2M |
|
|
SCHW
261
PUT
Charles Schwab
SCHW
$174B
| $61.7M | 0.03% |
834,000
-227,200
| -21% | -$17M |
|
262
PUT
Roku
ROKU
$21.3B
| $60.9M | 0.03% |
819,200
+310,200
| +61% | +$23.5M |
|
263
CALL
Verizon
VZ
$187B
| $60.8M | 0.03% |
1,520,300
-860,800
| -36% | -$36.3M |
|
264
CALL
GraniteShares Bloomberg Commodity Broad Strategy No K-1 ETF
COMB
$135M
| $60.5M | 0.03% |
993,100
+397,700
| +67% | +$8.06M |
|
265
CALL
iShares Morningstar Value ETF
ILCV
$1.3B
| $60.5M | 0.03% |
945,600
-263,900
| -22% | -$21.9M |
|
266
CALL
Affirm
AFRM
$24.8B
| $60.4M | 0.03% |
991,100
-356,500
| -26% | -$19.8M |
|
267
PUT
Texas Instruments
TXN
$264B
| $60.2M | 0.03% |
321,200
+24,800
| +8% | +$4.96M |
|
268
CALL
Philip Morris
PM
$297B
| $60.2M | 0.03% |
500,000
-328,600
| -40% | -$41.5M |
|
269
PUT
S&P Global
SPGI
$127B
| $59.3M | 0.03% |
119,100
-10,000
| -8% | -$5.07M |
|
270
CALL
NextEra Energy
NEE
$186B
| $59.2M | 0.03% |
825,800
-263,000
| -24% | -$20.4M |
|
|
X
271
PUT
DELISTED
US Steel
X
| $59.2M | 0.03% |
1,740,300
-235,500
| -12% | -$8.69M |
|
272
CALL
DraftKings
DKNG
$11.4B
| $59M | 0.03% |
1,585,300
-153,500
| -9% | -$6.09M |
|
273
CALL
Intuitive Surgical
ISRG
$123B
| $58.9M | 0.03% |
112,900
-16,700
| -13% | -$8.7M |
|
274
PUT
Caterpillar
CAT
$412B
| $58.8M | 0.03% |
162,200
-119,300
| -42% | -$46.3M |
|
275
PUT
Apollo Global Management
APO
$68.7B
| $58.7M | 0.03% |
355,700
+177,300
| +99% | +$28.1M |
|
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.