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 |
Apple
AAPL
|
+$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 4 |
iShares Silver Trust
SLV
|
+$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
+$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
+$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
+$42.8M |
| 3 |
Verizon
VZ
|
+$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
+$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
+$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.23% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
651
Sonoco
SON
$4.51B
| $637K | ﹤0.01% |
+10,191
| New | +$637K |
|
|
EVBG
652
DELISTED
Everbridge, Inc. Common Stock
EVBG
| $636K | ﹤0.01% |
+14,585
| New | +$636K |
|
653
Ameriprise Financial
AMP
$46.5B
| $632K | ﹤0.01% |
2,105
-658
| -24% | -$198K |
|
654
Shake Shack
SHAK
$3.96B
| $630K | ﹤0.01% |
+9,287
| New | +$630K |
|
655
Orion
OEC
$589M
| $629K | ﹤0.01% |
+39,437
| New | +$629K |
|
656
CleanSpark
CLSK
$2.72B
| $624K | ﹤0.01% |
50,497
+2,252
| +5% | +$27.8K |
|
657
Yeti Holdings
YETI
$2.89B
| $624K | ﹤0.01% |
+10,410
| New | +$624K |
|
658
Allot
ALLT
$402M
| $621K | ﹤0.01% |
76,782
+59,179
| +336% | +$479K |
|
659
iShares US Basic Materials ETF
IYM
$559M
| $621K | ﹤0.01% |
4,156
-1,463
| -26% | -$219K |
|
|
POLY
660
DELISTED
Plantronics, Inc.
POLY
| $618K | ﹤0.01% |
15,702
+13,945
| +794% | +$549K |
|
661
Amphenol
APH
$143B
| $617K | ﹤0.01% |
+16,390
| New | +$617K |
|
662
Flex
FLEX
$21B
| $616K | ﹤0.01% |
44,117
+43,607
| +8,550% | +$609K |
|
663
Aldeyra Therapeutics
ALDX
$346M
| $612K | ﹤0.01% |
137,741
+44,002
| +47% | +$196K |
|
|
TTCF
664
DELISTED
Tattooed Chef, Inc Class A Common Stock
TTCF
| $611K | ﹤0.01% |
48,641
+43,833
| +912% | +$551K |
|
665
Amneal Pharmaceuticals
AMRX
$3.11B
| $599K | ﹤0.01% |
143,731
+46,733
| +48% | +$195K |
|
666
Chegg
CHGG
$168M
| $599K | ﹤0.01% |
16,535
-28,156
| -63% | -$1.02M |
|
667
Grocery Outlet
GO
$1.72B
| $599K | ﹤0.01% |
+18,292
| New | +$599K |
|
668
UnitedHealth
UNH
$315B
| $598K | ﹤0.01% |
1,174
-46,384
| -98% | -$23.6M |
|
669
KB Home
KBH
$4.49B
| $597K | ﹤0.01% |
18,468
-37,596
| -67% | -$1.22M |
|
670
Idexx Laboratories
IDXX
$52.5B
| $596K | ﹤0.01% |
+1,090
| New | +$596K |
|
|
SILV
671
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $594K | ﹤0.01% |
66,745
+10,172
| +18% | +$90.5K |
|
672
B2Gold
BTG
$5.6B
| $593K | ﹤0.01% |
129,201
+70,226
| +119% | +$322K |
|
673
ADT
ADT
$7.05B
| $592K | ﹤0.01% |
+78,064
| New | +$592K |
|
674
RingCentral
RNG
$2.88B
| $587K | ﹤0.01% |
5,009
-682
| -12% | -$79.9K |
|
675
First Trust Natural Gas ETF
FCG
$324M
| $586K | ﹤0.01% |
24,059
+8,824
| +58% | +$215K |
|