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 |
Apple
AAPL
|
+$32.1M |
| 2 |
Bausch Health
BHC
|
+$18.4M |
| 3 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 4 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 5 |
Amazon
AMZN
|
+$13M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.7M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| 1 | Consumer Discretionary | 17.29% |
| 2 | Healthcare | 13.74% |
| 3 | Technology | 12.76% |
| 4 | Communication Services | 12.12% |
| 5 | Industrials | 10.49% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Credit Acceptance
CACC
$5.56B
| $164K | 0.01% |
770
+484
| +169% | +$103K |
|
552
Viasat
VSAT
$4.48B
| $163K | 0.01% |
+2,675
| New | +$163K |
|
553
Boston Properties
BXP
$12.1B
| $162K | 0.01% |
+1,276
| New | +$162K |
|
554
CNX Resources
CNX
$4.35B
| $162K | 0.01% |
+24,642
| New | +$162K |
|
|
XLRN
555
DELISTED
Acceleron Pharma Inc.
XLRN
| $162K | 0.01% |
3,337
-6,515
| -66% | -$316K |
|
|
CMD
556
DELISTED
Cantel Medical Corporation
CMD
| $161K | 0.01% |
2,592
+1,828
| +239% | +$114K |
|
557
TransDigm Group
TDG
$71.9B
| $160K | 0.01% |
+702
| New | +$160K |
|
558
SPDR S&P Homebuilders ETF
XHB
$1.91B
| $159K | 0.01% |
4,655
-14,951
| -76% | -$511K |
|
559
Sprouts Farmers Market
SFM
$12B
| $158K | 0.01% |
+5,972
| New | +$158K |
|
560
Apollo Global Management
APO
$80.2B
| $157K | 0.01% |
10,361
-7,455
| -42% | -$113K |
|
561
iShares MSCI Malaysia ETF
EWM
$245M
| $157K | 0.01% |
+5,093
| New | +$157K |
|
|
RLD
562
DELISTED
REALD INC COM STK
RLD
| $157K | 0.01% |
14,923
+11,951
| +402% | +$126K |
|
563
Hain Celestial
HAIN
$130M
| $156K | 0.01% |
+3,867
| New | +$156K |
|
|
FRC
564
DELISTED
First Republic Bank
FRC
| $156K | 0.01% |
2,367
+957
| +68% | +$63.1K |
|
565
Dominion Energy
D
$50.4B
| $155K | 0.01% |
+2,299
| New | +$155K |
|
566
HealthEquity
HQY
$8.02B
| $155K | 0.01% |
6,199
+6,164
| +17,611% | +$154K |
|
567
Zions Bancorporation
ZION
$8.54B
| $154K | 0.01% |
5,665
-6,958
| -55% | -$189K |
|
|
HTWR
568
DELISTED
HEARTWARE INTERNATIONAL INC COM STK (DE)
HTWR
| $154K | 0.01% |
3,066
+2,658
| +651% | +$134K |
|
569
Allegiant Air
ALGT
$1.16B
| $153K | 0.01% |
914
+322
| +54% | +$53.9K |
|
570
Cimpress
CMPR
$1.55B
| $151K | 0.01% |
1,865
+1,793
| +2,490% | +$145K |
|
571
El Pollo Loco
LOCO
$298M
| $151K | 0.01% |
+11,972
| New | +$151K |
|
572
Amphenol
APH
$146B
| $150K | 0.01% |
11,488
+4,128
| +56% | +$53.9K |
|
573
VanEck ChiNext ETF
CNXT
$39.9M
| $150K | 0.01% |
3,645
+1,927
| +112% | +$79.3K |
|
574
iShares Core S&P Mid-Cap ETF
IJH
$100B
| $150K | 0.01% |
5,390
-10,855
| -67% | -$302K |
|
575
iShares MSCI Pacific ex Japan ETF
EPP
$1.82B
| $148K | 0.01% |
+3,859
| New | +$148K |
|