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 |
Amazon
AMZN
|
+$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37M |
| 3 |
Amgen
AMGN
|
+$32.3M |
| 4 |
Micron Technology
MU
|
+$29.4M |
| 5 |
Qualcomm
QCOM
|
+$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$29.8M |
| 2 |
Gilead Sciences
GILD
|
+$29.3M |
| 3 |
Goldman Sachs
GS
|
+$27.7M |
| 4 |
Booking.com
BKNG
|
+$26M |
| 5 |
AT&T
T
|
+$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
HABT
776
DELISTED
The Habit Restaurants, Inc. - Class A
HABT
| $139K | 0.01% |
8,843
-6,581
| -43% | -$103K |
|
777
Extra Space Storage
EXR
$30.8B
| $138K | 0.01% |
+1,781
| New | +$138K |
|
778
STAAR Surgical
STAA
$1.37B
| $138K | 0.01% |
12,779
+12,159
| +1,961% | +$131K |
|
|
WRD
779
DELISTED
WildHorse Resource Development
WRD
| $138K | 0.01% |
+11,216
| New | +$138K |
|
780
Curis
CRIS
$22.4M
| $137K | 0.01% |
730
+701
| +2,417% | +$132K |
|
781
MiMedx Group
MDXG
$1.02B
| $137K | 0.01% |
9,160
+9,134
| +35,131% | +$137K |
|
|
MNDT
782
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $137K | 0.01% |
9,055
-38,174
| -81% | -$578K |
|
|
AMJ
783
DELISTED
JP Morgan Alerian MLP Index ETN 5/24/24
AMJ
| $136K | 0.01% |
+4,605
| New | +$136K |
|
784
MacroGenics
MGNX
$109M
| $135K | 0.01% |
+7,734
| New | +$135K |
|
785
Norwegian Cruise Line
NCLH
$11.5B
| $135K | 0.01% |
+2,494
| New | +$135K |
|
786
Olympic Steel
ZEUS
$365M
| $134K | 0.01% |
6,927
+6,698
| +2,925% | +$130K |
|
|
LEAF
787
DELISTED
Leaf Group Ltd.
LEAF
| $134K | 0.01% |
17,204
-12,943
| -43% | -$101K |
|
788
Ionis Pharmaceuticals
IONS
$10.2B
| $133K | 0.01% |
2,631
-35,944
| -93% | -$1.82M |
|
789
Rollins
ROL
$27.3B
| $133K | 0.01% |
7,403
+4,845
| +189% | +$87K |
|
790
Viper Energy
VNOM
$6.62B
| $133K | 0.01% |
8,531
+3,432
| +67% | +$53.5K |
|
791
Cameco
CCJ
$34.6B
| $132K | 0.01% |
+14,534
| New | +$132K |
|
792
Healthpeak Properties
DOC
$12.5B
| $132K | 0.01% |
+4,139
| New | +$132K |
|
|
MVO
793
MV Oil Trust
MVO
$68.9M
| $132K | 0.01% |
+22,791
| New | +$132K |
|
794
Unisys
UIS
$276M
| $132K | 0.01% |
10,346
-765
| -7% | -$9.76K |
|
795
Barings BDC
BBDC
$994M
| $131K | 0.01% |
+7,467
| New | +$131K |
|
796
Affiliated Managers Group
AMG
$6.6B
| $129K | 0.01% |
783
-2,764
| -78% | -$455K |
|
797
Direxion Daily Semiconductor Bear 3X Shares
SOXS
$1.21B
| – | – |
0
| – | -$3K |
|
798
NetSol Technologies
NTWK
$49.4M
| $128K | 0.01% |
32,606
+21,913
| +205% | +$86K |
|
|
DNB
799
DELISTED
Dun & Bradstreet
DNB
| $128K | 0.01% |
1,185
-4,366
| -79% | -$472K |
|
800
Aramark
ARMK
$10B
| $127K | 0.01% |
+4,295
| New | +$127K |
|