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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1076
Tradr TSLA Bear Daily ETF
TSLQ
$207M
| $92K | ﹤0.01% |
+476
| New | +$92K |
|
1077
Azenta
AZTA
$1.36B
| $91K | ﹤0.01% |
+1,970
| New | +$91K |
|
1078
First Trust Nasdaq Artificial Intelligence and Robotics ETF
ROBT
$567M
| $91K | ﹤0.01% |
2,002
+1,483
| +286% | +$67.4K |
|
1079
Safe Bulkers
SB
$466M
| $91K | ﹤0.01% |
28,113
+779
| +3% | +$2.52K |
|
1080
Glimpse Group
VRAR
$32.6M
| $91K | ﹤0.01% |
25,778
+13,014
| +102% | +$45.9K |
|
1081
Enovis
ENOV
$1.81B
| $90K | ﹤0.01% |
1,418
+519
| +58% | +$32.9K |
|
1082
Global X MSCI Greece ETF
GREK
$312M
| $90K | ﹤0.01% |
+2,438
| New | +$90K |
|
1083
Olo Inc
OLO
$1.74B
| $90K | ﹤0.01% |
+14,026
| New | +$90K |
|
|
RENT
1084
Rent the Runway
RENT
$20.6M
| $90K | ﹤0.01% |
2,287
-745
| -25% | -$29.3K |
|
1085
The Beauty Health Co
SKIN
$321M
| $90K | ﹤0.01% |
10,821
-9,044
| -46% | -$75.2K |
|
1086
Sun Country Airlines
SNCY
$728M
| $90K | ﹤0.01% |
+4,008
| New | +$90K |
|
1087
-1x Short VIX Futures ETF
SVIX
$196M
| $90K | ﹤0.01% |
+3,218
| New | +$90K |
|
1088
Altice USA
ATUS
$1.12B
| $89K | ﹤0.01% |
29,765
+28,673
| +2,626% | +$85.7K |
|
1089
IAC Inc
IAC
$2.89B
| $89K | ﹤0.01% |
1,738
-18,461
| -91% | -$945K |
|
1090
SiriusPoint
SPNT
$2.22B
| $89K | ﹤0.01% |
9,897
+2,062
| +26% | +$18.5K |
|
1091
United Rentals
URI
$60.4B
| $89K | ﹤0.01% |
201
| – | – |
|
1092
Marriott Vacations Worldwide
VAC
$2.67B
| $89K | ﹤0.01% |
+729
| New | +$89K |
|
|
DNMR
1093
DELISTED
Danimer Scientific, Inc.
DNMR
| $89K | ﹤0.01% |
945
-1,019
| -52% | -$96K |
|
1094
Axos Financial
AX
$5.17B
| $88K | ﹤0.01% |
+2,245
| New | +$88K |
|
1095
Grindr
GRND
$3.09B
| $88K | ﹤0.01% |
+15,931
| New | +$88K |
|
|
LUCK
1096
Lucky Strike Entertainment Corporation
LUCK
$1.38B
| $88K | ﹤0.01% |
+7,604
| New | +$88K |
|
|
STER
1097
DELISTED
Sterling Check Corp. Common Stock
STER
| $88K | ﹤0.01% |
7,230
-978
| -12% | -$11.9K |
|
1098
Costco
COST
$429B
| $87K | ﹤0.01% |
+163
| New | +$87K |
|
1099
Extra Space Storage
EXR
$31.2B
| $87K | ﹤0.01% |
+589
| New | +$87K |
|
1100
Landstar System
LSTR
$4.46B
| $87K | ﹤0.01% |
454
-3,140
| -87% | -$602K |
|