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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
AIOT
726
PowerFleet, Inc. Common Stock
AIOT
$717M
| $342K | ﹤0.01% |
68,487
-130,518
| -66% | -$652K |
|
727
Axalta
AXTA
$6.86B
| $341K | ﹤0.01% |
+9,448
| New | +$341K |
|
728
Global Ship Lease
GSL
$1.12B
| $339K | ﹤0.01% |
12,728
+537
| +4% | +$14.3K |
|
729
KeyCorp
KEY
$21.1B
| $339K | ﹤0.01% |
+20,295
| New | +$339K |
|
730
Tucows
TCX
$205M
| $339K | ﹤0.01% |
16,242
+15,631
| +2,558% | +$326K |
|
731
Jack in the Box
JACK
$341M
| $337K | ﹤0.01% |
+7,248
| New | +$337K |
|
732
Mattel
MAT
$5.77B
| $337K | ﹤0.01% |
+17,735
| New | +$337K |
|
733
USA Compression Partners
USAC
$2.89B
| $337K | ﹤0.01% |
14,742
+4,343
| +42% | +$99.3K |
|
734
B&G Foods
BGS
$363M
| $336K | ﹤0.01% |
+37,907
| New | +$336K |
|
735
Crescent Energy
CRGY
$2.22B
| $335K | ﹤0.01% |
30,613
-80,502
| -72% | -$881K |
|
736
iShares Core MSCI EAFE ETF
IEFA
$153B
| $334K | ﹤0.01% |
4,283
-687
| -14% | -$53.6K |
|
737
iShares Mortgage Real Estate ETF
REM
$617M
| $333K | ﹤0.01% |
14,037
-7,949
| -36% | -$189K |
|
738
Nuvalent
NUVL
$5.9B
| $332K | ﹤0.01% |
+3,255
| New | +$332K |
|
739
Under Armour Class C
UA
$2.11B
| $332K | ﹤0.01% |
39,753
+38,133
| +2,354% | +$318K |
|
740
ProShares Ultra Semiconductors
USD
$1.5B
| $332K | ﹤0.01% |
+5,544
| New | +$332K |
|
|
TELL
741
DELISTED
Tellurian Inc.
TELL
| $332K | ﹤0.01% |
343,611
+254,701
| +286% | +$246K |
|
742
Invesco Solar ETF
TAN
$739M
| $331K | ﹤0.01% |
+7,694
| New | +$331K |
|
743
Natera
NTRA
$23.7B
| $329K | ﹤0.01% |
+2,598
| New | +$329K |
|
|
LOGC
744
DELISTED
ContextLogic
LOGC
| $329K | ﹤0.01% |
60,376
+50,509
| +512% | +$275K |
|
745
MINISO
MNSO
$7.75B
| $320K | ﹤0.01% |
18,255
+7,651
| +72% | +$134K |
|
746
Littelfuse
LFUS
$6.68B
| $319K | ﹤0.01% |
+1,206
| New | +$319K |
|
|
EXK
747
Endeavour Silver
EXK
$1.77B
| $316K | ﹤0.01% |
80,405
+27,417
| +52% | +$108K |
|
748
RXO
RXO
$2.82B
| $316K | ﹤0.01% |
+11,294
| New | +$316K |
|
749
PTC
PTC
$24.7B
| $314K | ﹤0.01% |
+1,741
| New | +$314K |
|
750
Webster Financial
WBS
$10.3B
| $314K | ﹤0.01% |
+6,750
| New | +$314K |
|