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 | |
|---|---|---|---|---|---|---|
701
VanEck Oil Services ETF
OIH
$858M
| $168K | 0.01% |
340
-7,232
| -96% | -$3.57M |
|
|
LGF.B
702
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $168K | 0.01% |
6,424
-236
| -4% | -$6.17K |
|
703
SS&C Technologies
SSNC
$21.6B
| $166K | 0.01% |
+4,340
| New | +$166K |
|
704
Murphy Oil
MUR
$3.72B
| $166K | 0.01% |
+6,477
| New | +$166K |
|
705
United States Oil Fund
USO
$928M
| $166K | 0.01% |
2,188
-7,889
| -78% | -$599K |
|
|
SWIR
706
DELISTED
Sierra Wireless
SWIR
| $166K | 0.01% |
5,923
+5,753
| +3,384% | +$161K |
|
707
Baxter International
BAX
$12.3B
| $165K | 0.01% |
+2,730
| New | +$165K |
|
708
Commault Systems
CVLT
$7.84B
| $165K | 0.01% |
2,930
+1,857
| +173% | +$105K |
|
|
CEQP
709
DELISTED
Crestwood Equity Partners LP
CEQP
| $165K | 0.01% |
7,046
+6,744
| +2,233% | +$158K |
|
|
HAWK
710
DELISTED
Blackhawk Network Holdings, Inc. Common Stock
HAWK
| $165K | 0.01% |
+3,787
| New | +$165K |
|
711
Altisource Portfolio Solutions
ASPS
$125M
| $164K | 0.01% |
944
-2,815
| -75% | -$489K |
|
712
Cheesecake Factory
CAKE
$2.92B
| $164K | 0.01% |
+3,272
| New | +$164K |
|
713
Citizens Financial Group
CFG
$22.3B
| $164K | 0.01% |
4,603
-71,738
| -94% | -$2.56M |
|
714
Liberty Global Class A
LBTYA
$3.93B
| $164K | 0.01% |
+5,114
| New | +$164K |
|
715
Wabash National
WNC
$461M
| $164K | 0.01% |
+7,504
| New | +$164K |
|
716
World Acceptance Corp
WRLD
$904M
| $164K | 0.01% |
2,190
+2,038
| +1,341% | +$153K |
|
717
Casella Waste Systems
CWST
$5.81B
| $162K | 0.01% |
9,931
+8,505
| +596% | +$139K |
|
718
Quest Diagnostics
DGX
$20.1B
| $162K | 0.01% |
+1,465
| New | +$162K |
|
|
SEAC
719
DELISTED
Seachange International Inc
SEAC
| $162K | 0.01% |
3,059
+3,055
| +76,375% | +$162K |
|
|
VER
720
DELISTED
VEREIT, Inc.
VER
| $162K | 0.01% |
3,999
-190
| -5% | -$7.7K |
|
721
First Majestic Silver
AG
$4.61B
| $161K | 0.01% |
+19,488
| New | +$161K |
|
722
Alliance Resource Partners
ARLP
$2.92B
| $161K | 0.01% |
+8,556
| New | +$161K |
|
723
Groupon
GRPN
$916M
| $161K | 0.01% |
+2,109
| New | +$161K |
|
724
Tronox
TROX
$755M
| $160K | 0.01% |
10,621
-7,360
| -41% | -$111K |
|
725
Universal Corp
UVV
$1.38B
| $160K | 0.01% |
+2,481
| New | +$160K |
|