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 | Consumer Discretionary | 9.5% |
| 2 | Healthcare | 7.55% |
| 3 | Technology | 7.01% |
| 4 | Communication Services | 6.66% |
| 5 | Industrials | 5.76% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
201
PUT
NXP Semiconductors
NXPI
$69B
| $1.06M | 0.08% |
1,772
+740
| +72% | +$63.3K |
|
202
Hartford Financial Services
HIG
$38.9B
| $1.06M | 0.08% |
24,378
+16,341
| +203% | +$749K |
|
|
JOY
203
DELISTED
Joy Global Inc
JOY
| $1.06M | 0.08% |
83,987
+27,211
| +48% | +$411K |
|
204
MetLife
MET
$59.8B
| $1.06M | 0.08% |
+24,610
| New | +$1.08M |
|
205
PUT
FedEx
FDX
$75.2B
| $1.05M | 0.08% |
896
-504
| -36% | -$78K |
|
|
ACAS
206
DELISTED
American Capital Ltd
ACAS
| $1.05M | 0.08% |
76,006
+64,656
| +570% | +$883K |
|
|
ATHN
207
DELISTED
Athenahealth, Inc.
ATHN
| $1.05M | 0.08% |
6,500
+4,701
| +261% | +$726K |
|
208
Prothena Corp
PRTA
$454M
| $1.03M | 0.08% |
15,147
+6,540
| +76% | +$394K |
|
209
PUT
Bank of America
BAC
$430B
| $1.01M | 0.08% |
2,238
-1,462
| -40% | -$24.7K |
|
210
RTX Corp
RTX
$261B
| $1.01M | 0.08% |
16,770
-92,485
| -85% | -$5.6M |
|
211
CALL
Wells Fargo
WFC
$266B
| $1.01M | 0.08% |
2,292
+608
| +36% | +$33K |
|
212
CALL
Capri Holdings
CPRI
$1.83B
| $1M | 0.08% |
828
-87
| -10% | -$3.58K |
|
213
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.83B
| $1M | 0.08% |
37,210
+14,056
| +61% | +$415K |
|
214
Direxion Daily Energy Bull 2X ETF
ERX
$240M
| $1M | 0.08% |
4,268
+2,074
| +95% | +$647K |
|
215
Intel
INTC
$530B
| $995K | 0.08% |
28,901
+3,831
| +15% | +$129K |
|
216
Kinder Morgan
KMI
$72B
| $994K | 0.08% |
66,674
+13,606
| +26% | +$324K |
|
217
Sarepta Therapeutics
SRPT
$1.71B
| $994K | 0.08% |
25,776
+13,215
| +105% | +$428K |
|
|
SYT
218
DELISTED
Syngenta Ag
SYT
| $991K | 0.08% |
12,598
-2,298
| -15% | -$164K |
|
219
CALL
Valero Energy
VLO
$93.5B
| $984K | 0.08% |
2,598
+1,283
| +98% | +$87.4K |
|
220
PUT
iShares Morningstar Value ETF
ILCV
$1.3B
| $980K | 0.08% |
9,858
-2,136
| -18% | -$88K |
|
221
lululemon athletica
LULU
$13.2B
| $979K | 0.08% |
18,664
-6,035
| -24% | -$304K |
|
222
Markel Group
MKL
$24.8B
| $977K | 0.08% |
+1,107
| New | +$963K |
|
223
PUT
Newmont
NEM
$98.7B
| $977K | 0.08% |
1,518
+1,335
| +730% | +$24.5K |
|
224
Republic Services
RSG
$67.8B
| $969K | 0.08% |
22,029
+21,463
| +3,792% | +$937K |
|
|
PXD
225
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $967K | 0.08% |
728
+271
| +59% | +$37.2K |
|
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's Q4 2015 filing shows 1,417 new, 1,993 increased, 1,803 reduced and 1,598 closed positions. Its largest new stake was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M. The largest sale was iShares Russell 2000 ETF, an estimated $27.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 9.5% of assets, up from 4.6% a quarter earlier, followed by Healthcare and Technology.
- 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 1,417 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.