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 | |
|---|---|---|---|---|---|---|
|
SWN
576
DELISTED
Southwestern Energy Company
SWN
| $901K | ﹤0.01% |
193,493
+62,280
| +47% | +$290K |
|
577
Baker Hughes
BKR
$46.1B
| $898K | ﹤0.01% |
37,327
-43,477
| -54% | -$1.05M |
|
578
Suburban Propane Partners
SPH
$1.21B
| $898K | ﹤0.01% |
61,311
+57,771
| +1,632% | +$846K |
|
579
American Express Global Business Travel
GBTG
$4.24B
| $896K | ﹤0.01% |
+90,829
| New | +$896K |
|
580
Permian Resources
PR
$9.93B
| $895K | ﹤0.01% |
149,691
+36,397
| +32% | +$218K |
|
581
Sibanye-Stillwater
SBSW
$6.11B
| $895K | ﹤0.01% |
71,373
-11,462
| -14% | -$144K |
|
582
Kinder Morgan
KMI
$60.7B
| $881K | ﹤0.01% |
55,597
+7,195
| +15% | +$114K |
|
583
Pegasystems
PEGA
$9.64B
| $881K | ﹤0.01% |
15,762
+11,958
| +314% | +$668K |
|
584
BWX Technologies
BWXT
$15.1B
| $878K | ﹤0.01% |
18,349
+15,380
| +518% | +$736K |
|
585
Check Point Software Technologies
CHKP
$20.8B
| $877K | ﹤0.01% |
7,529
+659
| +10% | +$76.8K |
|
586
Carlyle Group
CG
$23.6B
| $867K | ﹤0.01% |
+15,809
| New | +$867K |
|
587
Saia
SAIA
$8.19B
| $866K | ﹤0.01% |
+2,571
| New | +$866K |
|
588
Axcelis
ACLS
$2.61B
| $862K | ﹤0.01% |
11,569
+11,504
| +17,698% | +$857K |
|
589
Acacia Research
ACTG
$306M
| $855K | ﹤0.01% |
166,752
+120,244
| +259% | +$617K |
|
|
BZUN
590
Baozun
BZUN
$226M
| $845K | ﹤0.01% |
60,851
+34,677
| +132% | +$482K |
|
591
Enphase Energy
ENPH
$4.84B
| $840K | ﹤0.01% |
4,593
-2,569
| -36% | -$470K |
|
592
CEVA Inc
CEVA
$547M
| $839K | ﹤0.01% |
+19,408
| New | +$839K |
|
593
Eversource Energy
ES
$23.8B
| $839K | ﹤0.01% |
9,226
+7,289
| +376% | +$663K |
|
594
MicroSectors FANG+ ETNs due Jan 8 2038
FNGS
$518M
| $836K | ﹤0.01% |
25,820
+9,589
| +59% | +$310K |
|
|
CS
595
DELISTED
Credit Suisse Group
CS
| $836K | ﹤0.01% |
86,752
-146,765
| -63% | -$1.41M |
|
596
Direxion Daily FTSE China Bear 3X Shares
YANG
$172M
| $834K | ﹤0.01% |
+2,059
| New | +$834K |
|
597
Ameriprise Financial
AMP
$46.4B
| $833K | ﹤0.01% |
2,763
+554
| +25% | +$167K |
|
598
Avis
CAR
$5.49B
| $833K | ﹤0.01% |
+4,017
| New | +$833K |
|
599
Global Ship Lease
GSL
$1.11B
| $829K | ﹤0.01% |
+36,207
| New | +$829K |
|
600
Global X Silver Miners ETF NEW
SIL
$3.09B
| $828K | ﹤0.01% |
22,595
-14,091
| -38% | -$516K |
|