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 | |
|---|---|---|---|---|---|---|
676
Beyond Meat
BYND
$191M
| $416K | ﹤0.01% |
+61,462
| New | +$416K |
|
677
Comstock Resources
CRK
$4.65B
| $414K | ﹤0.01% |
+37,228
| New | +$414K |
|
678
Coursera
COUR
$1.72B
| $408K | ﹤0.01% |
51,500
+24,066
| +88% | +$191K |
|
679
Rocket Lab Corporation Common Stock
RKLB
$22.3B
| $407K | ﹤0.01% |
41,831
-62,017
| -60% | -$603K |
|
680
JetBlue
JBLU
$1.85B
| $405K | ﹤0.01% |
61,767
+45,356
| +276% | +$297K |
|
681
Transmedics
TMDX
$3.67B
| $405K | ﹤0.01% |
2,583
-2,188
| -46% | -$343K |
|
682
Clean Harbors
CLH
$12.6B
| $402K | ﹤0.01% |
+1,666
| New | +$402K |
|
683
Glaukos
GKOS
$5.02B
| $401K | ﹤0.01% |
3,079
+843
| +38% | +$110K |
|
684
Direxion Daily FTSE China Bear 3X Shares
YANG
$173M
| $401K | ﹤0.01% |
4,823
+2,650
| +122% | +$220K |
|
685
Meritage Homes
MTH
$5.59B
| $400K | ﹤0.01% |
+3,906
| New | +$400K |
|
686
Jacobs Solutions
J
$17.3B
| $397K | ﹤0.01% |
3,069
-2,495
| -45% | -$323K |
|
687
Caleres
CAL
$527M
| $395K | ﹤0.01% |
+11,963
| New | +$395K |
|
|
QXO
688
QXO Inc
QXO
$14.5B
| $395K | ﹤0.01% |
+25,093
| New | +$395K |
|
689
iShares Expanded Tech-Software Sector ETF
IGV
$10.3B
| $393K | ﹤0.01% |
4,400
-9,555
| -68% | -$853K |
|
690
Direxion Daily S&P Biotech Bull 3X Shares
LABU
$692M
| $392K | ﹤0.01% |
3,048
-19,638
| -87% | -$2.53M |
|
691
IES Holdings
IESC
$7.57B
| $386K | ﹤0.01% |
+1,935
| New | +$386K |
|
692
Mama's Creations
MAMA
$391M
| $384K | ﹤0.01% |
52,607
-6,347
| -11% | -$46.3K |
|
693
Enova International
ENVA
$2.88B
| $382K | ﹤0.01% |
4,560
+1,278
| +39% | +$107K |
|
694
Tredegar Corp
TG
$271M
| $381K | ﹤0.01% |
+52,264
| New | +$381K |
|
695
Allstate
ALL
$52.7B
| $377K | ﹤0.01% |
+1,992
| New | +$377K |
|
696
IAMGOLD
IAG
$6.27B
| $376K | ﹤0.01% |
+72,061
| New | +$376K |
|
697
FerroAtlántica
GSM
$780M
| $375K | ﹤0.01% |
80,906
+44,604
| +123% | +$207K |
|
698
Jackson Financial
JXN
$6.75B
| $374K | ﹤0.01% |
4,109
+1,968
| +92% | +$179K |
|
699
MaxLinear
MXL
$1.37B
| $373K | ﹤0.01% |
25,814
+12,928
| +100% | +$187K |
|
700
VinFast Auto
VFS
$7.55B
| $373K | ﹤0.01% |
97,821
-127,915
| -57% | -$488K |
|