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 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.6M |
| 2 |
Shopify
SHOP
|
+$39.6M |
| 3 |
iShares China Large-Cap ETF
FXI
|
+$35.4M |
| 4 |
Verizon
VZ
|
+$34.1M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$34.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
AMC Entertainment Holdings
AMC
|
+$49.5M |
| 2 |
GE Aerospace
GE
|
+$35.2M |
| 3 |
Carnival Corporation Ltd
CCL
|
+$30.5M |
| 4 |
Advanced Micro Devices
AMD
|
+$28.8M |
| 5 |
Micron Technology
MU
|
+$23.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.61% |
| 2 | Consumer Discretionary | 0.43% |
| 3 | Healthcare | 0.35% |
| 4 | Communication Services | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SCHW
301
CALL
Charles Schwab
SCHW
$175B
| $44.2M | 0.04% |
525,500
+288,400
| +122% | +$23.3M |
|
302
PUT
Danaher
DHR
$127B
| $43.9M | 0.04% |
150,588
+127,126
| +542% | +$35M |
|
|
303
Shopify
SHOP
$154B
| $43.7M | 0.04% |
317,590
+271,270
| +586% | +$39.6M |
|
304
PUT
Newmont
NEM
$102B
| $43.4M | 0.04% |
700,000
+311,200
| +80% | +$17.6M |
|
305
PUT
DraftKings
DKNG
$11.3B
| $43.4M | 0.04% |
1,578,600
-796,400
| -34% | -$31.2M |
|
306
CALL
Cloudflare
NET
$95.5B
| $43.3M | 0.04% |
329,300
+146,100
| +80% | +$24.5M |
|
307
CALL
Lockheed Martin
LMT
$119B
| $43.3M | 0.04% |
121,800
-103,700
| -46% | -$35.9M |
|
308
PUT
Wynn Resorts
WYNN
$9.79B
| $43.2M | 0.04% |
507,700
+104,300
| +26% | +$9.24M |
|
309
CALL
Peloton Interactive
PTON
$2.71B
| $43M | 0.04% |
1,201,200
+256,600
| +27% | +$15.7M |
|
310
PUT
Palo Alto Networks
PANW
$273B
| $42.9M | 0.04% |
462,000
+118,200
| +34% | +$10.2M |
|
311
CALL
Delta Air Lines
DAL
$54.9B
| $42.8M | 0.04% |
1,095,800
+81,900
| +8% | +$3.28M |
|
|
312
State Street Financial Select Sector SPDR ETF
XLF
$55.3B
| $42.8M | 0.04% |
1,094,875
+1,083,712
| +9,708% | +$42.6M |
|
313
PUT
Workday
WDAY
$32.7B
| $42.4M | 0.04% |
155,200
-70,900
| -31% | -$19.7M |
|
314
CALL
Twilio
TWLO
$27.8B
| $42.2M | 0.04% |
160,400
+45,800
| +40% | +$13.7M |
|
315
PUT
Analog Devices
ADI
$188B
| $42.2M | 0.04% |
240,300
+146,400
| +156% | +$25.9M |
|
|
316
Verizon
VZ
$185B
| $42.2M | 0.04% |
812,399
+653,849
| +412% | +$34.1M |
|
317
PUT
Alcoa
AA
$12.2B
| $41.1M | 0.04% |
690,000
+179,900
| +35% | +$9.01M |
|
318
CALL
Devon Energy
DVN
$51.8B
| $41.1M | 0.04% |
932,200
+361,200
| +63% | +$15M |
|
319
PUT
Carvana
CVNA
$44.9B
| $40.8M | 0.04% |
880,500
+508,500
| +137% | +$28M |
|
320
PUT
Simon Property Group
SPG
$73.4B
| $40.7M | 0.04% |
254,500
-1,300
| -0.5% | -$198K |
|
321
CALL
Thermo Fisher Scientific
TMO
$196B
| $40.4M | 0.04% |
60,500
+28,500
| +89% | +$17.8M |
|
322
CALL
MGM Resorts International
MGM
$11.6B
| $40.2M | 0.04% |
895,600
+626,200
| +232% | +$28.1M |
|
|
323
PUT
Devon Energy
DVN
$51.8B
| $39.9M | 0.04% |
905,600
+192,800
| +27% | +$8.02M |
|
324
CALL
Blackstone
BX
$150B
| $39.7M | 0.04% |
306,500
+43,500
| +17% | +$5.8M |
|
325
PUT
Norwegian Cruise Line
NCLH
$8.87B
| $39.5M | 0.04% |
1,902,600
+906,700
| +91% | +$21.7M |
|
Similar funds
Simplex Trading's Q4 2021 Portfolio in Review
As of Q4 2021, Simplex Trading held 12,077 positions worth $99B, down 7.5% from $107B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading withdrew a net $10.8B in Q4 2021, closing 1,645 positions and reducing 4,258 holdings. Its most notable exit was Carnival Corporation Ltd, an estimated $30.5M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.61% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in iShares China Large-Cap ETF worth $33M.
- Simplex Trading's largest Q4 2021 buy was iShares China Large-Cap ETF: 902,666 shares worth $33M.
- Simplex Trading added most to State Street Financial Select Sector SPDR ETF in Q4 2021, an estimated $42.6M increase.
- Simplex Trading's biggest Q4 2021 reduction was AMC Entertainment Holdings, cutting an estimated $49.5M.
- Simplex Trading fully exited Carnival Corporation Ltd in Q4 2021, selling an estimated $30.5M.
- Simplex Trading's ten largest holdings make up 33% of its $99B portfolio in Q4 2021.
- Simplex Trading opened 2,269 new positions and closed 1,645 in Q4 2021.
- Simplex Trading's portfolio value fell 7.5% quarter-over-quarter to $99B.
Based on Simplex Trading's 13F filing for Q4 2021, filed 4 Feb 2022.