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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
+$23.3M |
| 3 |
Pinduoduo
PDD
|
+$17.3M |
| 4 |
Pfizer
PFE
|
+$16.8M |
| 5 |
American Airlines Group
AAL
|
+$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
+$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$38.1M |
| 3 |
AutoZone
AZO
|
+$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
+$25.3M |
| 5 |
Apple
AAPL
|
+$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
CONX
876
DELISTED
CONX Corp. Class A Common Stock
CONX
| $326K | ﹤0.01% |
+32,736
| New | +$326K |
|
|
ATIP
877
DELISTED
ATI Physical Therapy, Inc.
ATIP
| $326K | ﹤0.01% |
+655
| New | +$326K |
|
|
CERN
878
DELISTED
Cerner Corp
CERN
| $325K | ﹤0.01% |
+4,535
| New | +$325K |
|
879
Rigel Pharmaceuticals
RIGL
$654M
| $323K | ﹤0.01% |
9,466
+758
| +9% | +$25.9K |
|
|
AMPE
880
DELISTED
Ampio Pharmaceuticals Inc.
AMPE
| $323K | ﹤0.01% |
639
+494
| +341% | +$250K |
|
|
VOXX
881
DELISTED
VOXX International Corporation Class A
VOXX
| $322K | ﹤0.01% |
16,924
+9,398
| +125% | +$179K |
|
|
MILE
882
DELISTED
Metromile, Inc. Common Stock
MILE
| $322K | ﹤0.01% |
31,317
+18,031
| +136% | +$185K |
|
|
QIWI
883
DELISTED
QIWI PLC
QIWI
| $322K | ﹤0.01% |
30,321
-187,321
| -86% | -$1.99M |
|
884
Corning
GLW
$64.2B
| $321K | ﹤0.01% |
7,400
+500
| +7% | +$21.7K |
|
885
nVent Electric
NVT
$15.3B
| $321K | ﹤0.01% |
+11,507
| New | +$321K |
|
886
Direxion Daily MSCI Brazil Bull 2X Shares
BRZU
$134M
| $319K | ﹤0.01% |
3,499
+2,513
| +255% | +$229K |
|
|
ONCT
887
DELISTED
Oncternal Therapeutics, Inc. Common Stock
ONCT
| $319K | ﹤0.01% |
1,918
+1,751
| +1,049% | +$291K |
|
888
MillerKnoll
MLKN
$1.38B
| $318K | ﹤0.01% |
+7,740
| New | +$318K |
|
889
Teucrium Corn Fund
CORN
$48.5M
| $316K | ﹤0.01% |
18,072
-22,697
| -56% | -$397K |
|
890
1-800-Flowers.com
FLWS
$326M
| $316K | ﹤0.01% |
11,470
-10,147
| -47% | -$280K |
|
|
EBIX
891
DELISTED
Ebix Inc
EBIX
| $314K | ﹤0.01% |
9,830
+9,510
| +2,972% | +$304K |
|
892
FTI Consulting
FCN
$5.23B
| $311K | ﹤0.01% |
+2,220
| New | +$311K |
|
893
Takeda Pharmaceutical
TAK
$48.3B
| $310K | ﹤0.01% |
17,025
+14,425
| +555% | +$263K |
|
894
Co-Diagnostics
CODX
$11.8M
| $309K | ﹤0.01% |
+32,413
| New | +$309K |
|
|
WPRT
895
Westport Fuel Systems
WPRT
$40.9M
| $308K | ﹤0.01% |
4,296
-2,442
| -36% | -$175K |
|
896
ALPS O'Shares Global Internet Giants ETF
OGIG
$163M
| $307K | ﹤0.01% |
5,895
+674
| +13% | +$35.1K |
|
897
Bright Horizons
BFAM
$6.36B
| $306K | ﹤0.01% |
1,788
-1,352
| -43% | -$231K |
|
898
Clover Health Investments
CLOV
$1.55B
| $305K | ﹤0.01% |
40,384
+40,034
| +11,438% | +$302K |
|
899
LivePerson
LPSN
$89.1M
| $305K | ﹤0.01% |
5,786
-9,086
| -61% | -$479K |
|
900
Veracyte
VCYT
$2.42B
| $305K | ﹤0.01% |
5,690
+5,593
| +5,766% | +$300K |
|