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
|
+$32.1M |
| 2 |
Bausch Health
BHC
|
+$18.4M |
| 3 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 4 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 5 |
Amazon
AMZN
|
+$13M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.7M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| 1 | Consumer Discretionary | 17.29% |
| 2 | Healthcare | 13.74% |
| 3 | Technology | 12.76% |
| 4 | Communication Services | 12.12% |
| 5 | Industrials | 10.49% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MSB
951
Mesabi Trust
MSB
$405M
| $43K | ﹤0.01% |
9,526
+8,326
| +694% | +$37.6K |
|
952
NovaGold Resources
NG
$2.86B
| $43K | ﹤0.01% |
+10,255
| New | +$43K |
|
953
Marriott Vacations Worldwide
VAC
$2.62B
| $43K | ﹤0.01% |
+767
| New | +$43K |
|
|
GRUB
954
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $43K | ﹤0.01% |
+892
| New | +$43K |
|
|
TAL
955
DELISTED
TAL INTERNATIONAL GROUP, INC.
TAL
| $43K | ﹤0.01% |
2,745
-5,505
| -67% | -$86.2K |
|
|
WR
956
DELISTED
Westar Energy Inc
WR
| $43K | ﹤0.01% |
+1,017
| New | +$43K |
|
|
FNSR
957
DELISTED
Finisar Corp
FNSR
| $43K | ﹤0.01% |
2,960
+2,762
| +1,395% | +$40.1K |
|
958
RH
RH
$4.3B
| $42K | ﹤0.01% |
+530
| New | +$42K |
|
959
SPDR S&P Biotech ETF
XBI
$5.45B
| $42K | ﹤0.01% |
601
-3,222
| -84% | -$225K |
|
|
AUY
960
DELISTED
Yamana Gold, Inc.
AUY
| $42K | ﹤0.01% |
+22,868
| New | +$42K |
|
|
VSLR
961
DELISTED
VIVINT SOLAR, INC.
VSLR
| $42K | ﹤0.01% |
+4,481
| New | +$42K |
|
|
XXIA
962
DELISTED
Ixia
XXIA
| $42K | ﹤0.01% |
+3,411
| New | +$42K |
|
963
HSBC
HSBC
$241B
| $41K | ﹤0.01% |
+1,182
| New | +$41K |
|
964
Outfront Media
OUT
$3.13B
| $41K | ﹤0.01% |
1,930
+1,895
| +5,414% | +$40.3K |
|
965
RadNet
RDNT
$5.78B
| $41K | ﹤0.01% |
6,726
+3,589
| +114% | +$21.9K |
|
966
SS&C Technologies
SSNC
$21.7B
| $41K | ﹤0.01% |
1,216
+780
| +179% | +$26.3K |
|
967
Gentherm
THRM
$1.08B
| $41K | ﹤0.01% |
+886
| New | +$41K |
|
|
PRMW
968
DELISTED
Primo Water Corporation
PRMW
| $41K | ﹤0.01% |
3,800
+3,739
| +6,130% | +$40.3K |
|
|
BITA
969
DELISTED
Bitauto Holdings Limited
BITA
| $41K | ﹤0.01% |
1,452
-3,100
| -68% | -$87.5K |
|
|
SIGM
970
DELISTED
Sigma Designs Inc
SIGM
| $41K | ﹤0.01% |
6,593
-4,504
| -41% | -$28K |
|
|
ZLTQ
971
DELISTED
ZELTIQ Aesthetics, Inc.
ZLTQ
| $41K | ﹤0.01% |
1,450
-2,501
| -63% | -$70.7K |
|
|
SGI
972
DELISTED
Silicon Graphics Intl.
SGI
| $41K | ﹤0.01% |
+6,960
| New | +$41K |
|
973
Fossil Group
FOSL
$164M
| $40K | ﹤0.01% |
1,102
-171
| -13% | -$6.21K |
|
974
Reading International Class A
RDI
$34.8M
| $40K | ﹤0.01% |
+3,075
| New | +$40K |
|
975
ProShares UltraPro Short Russell2000
SRTY
$80.6M
| $40K | ﹤0.01% |
14
-4
| -22% | -$11.4K |
|