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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.8M |
| 2 |
Bausch Health
BHC
|
+$20.3M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$18.9M |
| 4 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$12.3M |
| 5 |
Amazon
AMZN
|
+$12.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.8M |
| 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
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 51.63% |
| 2 | Consumer Discretionary | 9.7% |
| 3 | Healthcare | 7.81% |
| 4 | Technology | 7.23% |
| 5 | Communication Services | 6.86% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
BGG
751
DELISTED
Briggs & Stratton Corp.
BGG
| $246K | 0.02% |
14,269
+14,263
| +237,717% | +$267K |
|
|
LLL
752
DELISTED
L3 Technologies, Inc.
LLL
| $246K | 0.02% |
2,062
+267
| +15% | +$31.7K |
|
|
CNL
753
DELISTED
CLECO CRP (HOLDING CO)
CNL
| $245K | 0.02% |
4,702
+2,932
| +166% | +$152K |
|
754
PUT
Deckers Outdoor
DECK
$11.7B
| $244K | 0.02% |
996
+306
| +44% | +$2.71K |
|
755
PUT
Visa
V
$700B
| $244K | 0.02% |
2,147
-112
| -5% | -$8.68K |
|
756
American Coastal Insurance
ACIC
$451M
| $241K | 0.02% |
14,130
+4,469
| +46% | +$77K |
|
757
CVR Energy
CVI
$4.47B
| $241K | 0.02% |
6,145
-2,015
| -25% | -$86.9K |
|
758
Nucor
NUE
$59.2B
| $241K | 0.02% |
+5,984
| New | +$246K |
|
|
EMES
759
PUT
DELISTED
Emerge Energy Services LP
EMES
| $241K | 0.02% |
59
-103
| -64% | -$612 |
|
760
CALL
Halliburton
HAL
$30.9B
| $240K | 0.02% |
1,487
-51
| -3% | -$1.92K |
|
|
TIF
761
PUT
DELISTED
Tiffany & Co.
TIF
| $240K | 0.02% |
778
+507
| +187% | +$39.6K |
|
762
Cooper Companies
COO
$13.6B
| $239K | 0.02% |
7,124
-5,128
| -42% | -$184K |
|
|
WBC
763
DELISTED
WABCO HOLDINGS INC.
WBC
| $239K | 0.02% |
+2,339
| New | +$249K |
|
764
PUT
Deutsche Bank
DB
$77.7B
| $238K | 0.02% |
775
+372
| +92% | +$8.85K |
|
765
PUT
Fossil Group
FOSL
$305M
| $238K | 0.02% |
122
+75
| +160% | +$3.42K |
|
766
Travel + Leisure Co
TNL
$4.06B
| $238K | 0.02% |
7,265
+3,369
| +86% | +$116K |
|
767
PUT
Vodafone
VOD
$39.1B
| $238K | 0.02% |
325
-135
| -29% | -$4.41K |
|
|
ONIT
768
Onity Group
ONIT
$296M
| $238K | 0.02% |
2,283
+95
| +4% | +$9.95K |
|
769
Aramark
ARMK
$15B
| $237K | 0.02% |
10,180
+3,997
| +65% | +$91.3K |
|
770
Genesis Energy
GEL
$1.94B
| $237K | 0.02% |
6,456
+2,926
| +83% | +$113K |
|
771
PUT
Perrigo
PRGO
$2.07B
| $237K | 0.02% |
136
-71
| -34% | -$10.9K |
|
|
CLR
772
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $237K | 0.02% |
10,331
-3,192
| -24% | -$102K |
|
|
KANG
773
DELISTED
iKang Healthcare Group, Inc.
KANG
| $237K | 0.02% |
11,633
+11,480
| +7,503% | +$198K |
|
774
PUT
BlackBerry
BB
$4.51B
| $236K | 0.02% |
732
+174
| +31% | +$1.34K |
|
775
PUT
Philip Morris
PM
$284B
| $236K | 0.02% |
1,193
+462
| +63% | +$40.1K |
|
Similar funds
Simplex Trading's Q4 2015 Portfolio in Review
As of Q4 2015, Simplex Trading held 7,008 positions worth $1.28B, down 6.4% from $1.36B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $39.7M of net new capital in Q4 2015, opening 1,415 new positions and adding to 1,993 existing holdings. Its largest new stake was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M.
By sector, the portfolio is most concentrated in Miscellaneous at 52% of assets, down from 65% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, an estimated $13.8M trimmed.
- Simplex Trading's largest Q4 2015 buy was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M.
- Simplex Trading added most to Apple in Q4 2015, an estimated $34.8M increase.
- Simplex Trading's biggest Q4 2015 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $13.8M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q4 2015, selling an estimated $27.5M.
- Simplex Trading's ten largest holdings make up 19% of its $1.28B portfolio in Q4 2015.
- Simplex Trading opened 1,415 new positions and closed 1,598 in Q4 2015.
- Simplex Trading's portfolio value fell 6.4% quarter-over-quarter to $1.28B.
Based on Simplex Trading's 13F filing for Q4 2015, filed 20 Jan 2016.