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 |
Invesco QQQ Trust
QQQ
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
751
ManpowerGroup
MAN
$1.79B
| $389K | ﹤0.01% |
+4,318
| New | +$389K |
|
|
SWCH
752
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $389K | ﹤0.01% |
23,798
-6,637
| -22% | -$108K |
|
753
Vishay Intertechnology
VSH
$2.07B
| $388K | ﹤0.01% |
18,782
+8,074
| +75% | +$167K |
|
754
Mohawk Industries
MHK
$8.59B
| $386K | ﹤0.01% |
+2,739
| New | +$386K |
|
755
Noodles & Co
NDLS
$30.2M
| $386K | ﹤0.01% |
48,937
+41,964
| +602% | +$331K |
|
|
DS
756
DELISTED
Drive Shack Inc.
DS
| $386K | ﹤0.01% |
162,525
+140,080
| +624% | +$333K |
|
757
AquaBounty Technologies
AQB
$4.5M
| $385K | ﹤0.01% |
+2,202
| New | +$385K |
|
758
Direxion Daily Small Cap Bear 3x Shares
TZA
$281M
| $385K | ﹤0.01% |
7,021
-9,044
| -56% | -$496K |
|
759
ProShares UltraShort FTSE Europe
EPV
$15.8M
| $384K | ﹤0.01% |
4,743
+600
| +14% | +$48.6K |
|
760
Luminar Technologies
LAZR
$127M
| $384K | ﹤0.01% |
754
+747
| +10,671% | +$380K |
|
|
APHA
761
DELISTED
Aphria Inc. Common Shares
APHA
| $384K | ﹤0.01% |
55,612
-134,590
| -71% | -$929K |
|
762
Alerian MLP ETF
AMLP
$10.5B
| $382K | ﹤0.01% |
14,895
-19,300
| -56% | -$495K |
|
763
Digimarc
DMRC
$200M
| $381K | ﹤0.01% |
8,074
+4,424
| +121% | +$209K |
|
|
WPX
764
DELISTED
WPX Energy, Inc.
WPX
| $381K | ﹤0.01% |
46,828
+2,480
| +6% | +$20.2K |
|
|
DOC
765
DELISTED
PHYSICIANS REALTY TRUST
DOC
| $380K | ﹤0.01% |
+21,390
| New | +$380K |
|
|
QUOT
766
DELISTED
Quotient Technology Inc
QUOT
| $378K | ﹤0.01% |
40,152
+37,023
| +1,183% | +$349K |
|
767
ChargePoint
CHPT
$240M
| $374K | ﹤0.01% |
+467
| New | +$374K |
|
768
Realty Income
O
$54.7B
| $372K | ﹤0.01% |
6,184
-15,644
| -72% | -$941K |
|
769
Direxion Daily Regional Banks Bull 3X Shares
DPST
$716M
| $371K | ﹤0.01% |
+1,547
| New | +$371K |
|
|
SIXG
770
Defiance Connective Technologies ETF
SIXG
$664M
| $371K | ﹤0.01% |
+11,049
| New | +$371K |
|
|
LADR
771
Ladder Capital
LADR
$1.51B
| $370K | ﹤0.01% |
37,861
-41,457
| -52% | -$405K |
|
|
WBT
772
DELISTED
Welbilt, Inc.
WBT
| $366K | ﹤0.01% |
27,728
+14,869
| +116% | +$196K |
|
773
Sunstone Hotel Investors
SHO
$1.79B
| $365K | ﹤0.01% |
32,222
+25,413
| +373% | +$288K |
|
774
American Airlines Group
AAL
$8.41B
| $364K | ﹤0.01% |
23,090
+22,840
| +9,136% | +$360K |
|
775
Liberty Latin America Class C
LILAK
$1.53B
| $364K | ﹤0.01% |
32,887
+7,588
| +30% | +$84K |
|