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
| 1 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1301
Vanguard Financials ETF
VFH
$12.9B
| $160K | ﹤0.01% |
1,660
-555
| -25% | -$53.5K |
|
|
MGP
1302
DELISTED
MGM Growth Properties LLC Class A common shares representing limited liability company interests
MGP
| $160K | ﹤0.01% |
3,935
-450
| -10% | -$18.3K |
|
1303
Direxion Daily Technology Bear 3x Shares
TECS
$51.7M
| $159K | ﹤0.01% |
570
+430
| +307% | +$120K |
|
1304
UGI
UGI
$7.47B
| $159K | ﹤0.01% |
+3,468
| New | +$159K |
|
1305
SPDR S&P Health Care Services ETF
XHS
$76.1M
| $159K | ﹤0.01% |
+1,500
| New | +$159K |
|
1306
BJs Wholesale Club
BJ
$13B
| $158K | ﹤0.01% |
+2,364
| New | +$158K |
|
1307
Chemed
CHE
$6.5B
| $158K | ﹤0.01% |
299
+198
| +196% | +$105K |
|
1308
Future Fuel
FF
$169M
| $158K | ﹤0.01% |
20,748
+17,941
| +639% | +$137K |
|
|
RUSL
1309
DELISTED
Direxion Daily Russia Bull 2X Shares
RUSL
| $158K | ﹤0.01% |
5,844
+682
| +13% | +$18.4K |
|
1310
Bloom Energy
BE
$15.7B
| $157K | ﹤0.01% |
7,182
-103,858
| -94% | -$2.27M |
|
1311
Butterfly Network
BFLY
$395M
| $157K | ﹤0.01% |
23,503
-12,365
| -34% | -$82.6K |
|
1312
RAPT Therapeutics
RAPT
$268M
| $157K | ﹤0.01% |
536
-5,437
| -91% | -$1.59M |
|
1313
Sandstorm Gold
SAND
$3.46B
| $157K | ﹤0.01% |
+25,327
| New | +$157K |
|
1314
EchoStar
SATS
$21.5B
| $157K | ﹤0.01% |
5,972
-23,361
| -80% | -$614K |
|
1315
Wrap Technologies
WRAP
$104M
| $157K | ﹤0.01% |
40,167
+25,407
| +172% | +$99.3K |
|
1316
Goosehead Insurance
GSHD
$2.05B
| $156K | ﹤0.01% |
+1,204
| New | +$156K |
|
1317
SPS Commerce
SPSC
$4B
| $156K | ﹤0.01% |
+1,098
| New | +$156K |
|
1318
Vuzix
VUZI
$172M
| $155K | ﹤0.01% |
17,983
-23,174
| -56% | -$200K |
|
1319
Winnebago Industries
WGO
$949M
| $155K | ﹤0.01% |
2,076
-170
| -8% | -$12.7K |
|
|
PTR
1320
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $155K | ﹤0.01% |
+3,522
| New | +$155K |
|
|
ALLK
1321
DELISTED
Allakos
ALLK
| $154K | ﹤0.01% |
15,815
+12,960
| +454% | +$126K |
|
|
ARBK
1322
Argo Blockchain
ARBK
$19.4M
| $154K | ﹤0.01% |
+12,694
| New | +$154K |
|
1323
Xtrackers Harvest CSI 500 China A-Shares Small Cap ETF
ASHS
$29M
| $154K | ﹤0.01% |
3,760
+2,098
| +126% | +$85.9K |
|
1324
Builders FirstSource
BLDR
$15.8B
| $154K | ﹤0.01% |
1,807
-17,746
| -91% | -$1.51M |
|
1325
Clover Health Investments
CLOV
$1.57B
| $154K | ﹤0.01% |
41,604
-6,673
| -14% | -$24.7K |
|