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 | |
|---|---|---|---|---|---|---|
726
KLA
KLAC
$121B
| $451K | ﹤0.01% |
1,367
+497
| +57% | +$164K |
|
727
VanEck Low Carbon Energy ETF
SMOG
$126M
| $451K | ﹤0.01% |
2,872
-274
| -9% | -$43K |
|
|
CAJ
728
DELISTED
Canon, Inc.
CAJ
| $451K | ﹤0.01% |
19,850
+1,796
| +10% | +$40.8K |
|
|
TRIL
729
DELISTED
Trillium Therapeutics Inc.
TRIL
| $450K | ﹤0.01% |
41,948
-9,513
| -18% | -$102K |
|
|
DCP
730
DELISTED
DCP Midstream, LP
DCP
| $447K | ﹤0.01% |
20,657
+16,023
| +346% | +$347K |
|
731
Beazer Homes USA
BZH
$773M
| $446K | ﹤0.01% |
21,351
+11,843
| +125% | +$247K |
|
732
MacroGenics
MGNX
$111M
| $445K | ﹤0.01% |
13,984
+12,833
| +1,115% | +$408K |
|
733
Sasol
SSL
$4.38B
| $445K | ﹤0.01% |
30,751
-14,469
| -32% | -$209K |
|
734
Dentsply Sirona
XRAY
$2.83B
| $445K | ﹤0.01% |
+6,977
| New | +$445K |
|
|
CNH
735
CNH Industrial
CNH
$14.2B
| $445K | ﹤0.01% |
32,752
+32,522
| +14,140% | +$442K |
|
736
Global X MSCI China Consumer Discretionary ETF
CHIQ
$247M
| $444K | ﹤0.01% |
13,279
+7,525
| +131% | +$252K |
|
737
Lumentum
LITE
$10.4B
| $443K | ﹤0.01% |
4,856
+2,362
| +95% | +$215K |
|
738
Teradyne
TER
$18.3B
| $442K | ﹤0.01% |
+3,639
| New | +$442K |
|
739
CMS Energy
CMS
$21.2B
| $441K | ﹤0.01% |
7,205
+5,528
| +330% | +$338K |
|
740
Yext
YEXT
$1.08B
| $441K | ﹤0.01% |
30,482
+12,086
| +66% | +$175K |
|
741
Trex
TREX
$6.77B
| $440K | ﹤0.01% |
4,807
+4,534
| +1,661% | +$415K |
|
|
YSG
742
Yatsen Holding
YSG
$958M
| $440K | ﹤0.01% |
7,131
+3,428
| +93% | +$212K |
|
743
Universal Display
OLED
$6.91B
| $439K | ﹤0.01% |
1,857
+1,420
| +325% | +$336K |
|
|
SAFM
744
DELISTED
Sanderson Farms Inc
SAFM
| $438K | ﹤0.01% |
2,816
+2,420
| +611% | +$376K |
|
745
Acacia Research
ACTG
$326M
| $435K | ﹤0.01% |
65,539
+50,671
| +341% | +$336K |
|
746
Lufax Holding
LU
$2.53B
| $434K | ﹤0.01% |
7,478
+6,579
| +732% | +$382K |
|
747
Ribbon Communications
RBBN
$719M
| $434K | ﹤0.01% |
52,940
+36,933
| +231% | +$303K |
|
748
New Fortress Energy
NFE
$398M
| $432K | ﹤0.01% |
+9,423
| New | +$432K |
|
749
Verra Mobility
VRRM
$3.9B
| $432K | ﹤0.01% |
+31,954
| New | +$432K |
|
750
Corpay
CPAY
$22B
| $431K | ﹤0.01% |
1,608
-3,769
| -70% | -$1.01M |
|