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
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SOHU
826
Sohu.com
SOHU
$481M
| $219K | ﹤0.01% |
13,263
-8,779
| -40% | -$145K |
|
|
BRG
827
DELISTED
Bluerock Residential Growth REIT, Inc.
BRG
| $218K | ﹤0.01% |
+8,302
| New | +$218K |
|
828
Agios Pharmaceuticals
AGIO
$2.12B
| $217K | ﹤0.01% |
+9,810
| New | +$217K |
|
829
IAC Inc
IAC
$2.92B
| $217K | ﹤0.01% |
+3,483
| New | +$217K |
|
830
Kezar Life Sciences
KZR
$29.6M
| $217K | ﹤0.01% |
2,629
+2,117
| +413% | +$175K |
|
831
iShares Core S&P Total US Stock Market ETF
ITOT
$76.7B
| $216K | ﹤0.01% |
+2,589
| New | +$216K |
|
|
MACK
832
DELISTED
Merrimack Pharmaceuticals, Inc.
MACK
| $216K | ﹤0.01% |
36,468
-1,351
| -4% | -$8K |
|
833
Acacia Research
ACTG
$312M
| $215K | ﹤0.01% |
42,786
-11,493
| -21% | -$57.8K |
|
834
GoPro
GPRO
$301M
| $215K | ﹤0.01% |
38,984
-92,748
| -70% | -$512K |
|
835
Workhorse Group
WKHS
$18.1M
| $215K | ﹤0.01% |
332
+135
| +69% | +$87.4K |
|
836
ACV Auctions
ACVA
$1.77B
| $214K | ﹤0.01% |
+32,797
| New | +$214K |
|
837
Under Armour Class C
UA
$2.11B
| $214K | ﹤0.01% |
28,356
-13,332
| -32% | -$101K |
|
838
Arthur J. Gallagher & Co
AJG
$76.9B
| $213K | ﹤0.01% |
+1,307
| New | +$213K |
|
839
Allbirds
BIRD
$50M
| $213K | ﹤0.01% |
2,713
+2,343
| +633% | +$184K |
|
840
Invesco CurrencyShares British Pound Sterling Trust
FXB
$91.3M
| $213K | ﹤0.01% |
1,824
-633
| -26% | -$73.9K |
|
841
Root
ROOT
$1.51B
| $213K | ﹤0.01% |
9,966
+6,562
| +193% | +$140K |
|
|
RTL
842
DELISTED
The Necessity Retail REIT, Inc. Class A Common Stock
RTL
| $213K | ﹤0.01% |
29,277
+24,176
| +474% | +$176K |
|
843
Perrigo
PRGO
$3.07B
| $210K | ﹤0.01% |
5,200
-22,966
| -82% | -$927K |
|
|
NETI
844
DELISTED
Eneti Inc.
NETI
| $210K | ﹤0.01% |
34,334
-24,661
| -42% | -$151K |
|
|
TTCF
845
DELISTED
Tattooed Chef, Inc Class A Common Stock
TTCF
| $210K | ﹤0.01% |
33,486
-15,155
| -31% | -$95K |
|
846
Andersons Inc
ANDE
$1.38B
| $209K | ﹤0.01% |
6,346
-7,110
| -53% | -$234K |
|
847
Caesarstone
CSTE
$49.8M
| $209K | ﹤0.01% |
+22,895
| New | +$209K |
|
848
Cemex
CX
$13.7B
| $209K | ﹤0.01% |
53,387
-31,717
| -37% | -$124K |
|
849
Carriage Services
CSV
$663M
| $207K | ﹤0.01% |
+5,223
| New | +$207K |
|
850
Direxion Daily Regional Banks Bull 3X Shares
DPST
$717M
| $207K | ﹤0.01% |
859
-1,736
| -67% | -$418K |
|