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 | |
|---|---|---|---|---|---|---|
|
EPRS
1151
DELISTED
EPIRUS BIOPHARMACEUTICALS INC COM
EPRS
| $132K | 0.01% |
43,008
+26,190
| +156% | +$118K |
|
1152
PUT
Wells Fargo
WFC
$261B
| $131K | 0.01% |
1,357
-165
| -11% | -$8.96K |
|
1153
CALL
Wolfspeed
WOLF
$1.2B
| $131K | 0.01% |
524
+148
| +39% | +$3.83K |
|
1154
PUT
Bristol-Myers Squibb
BMY
$127B
| $130K | 0.01% |
4,213
+1,450
| +52% | +$95.8K |
|
1155
PUT
Capital One
COF
$124B
| $130K | 0.01% |
277
-130
| -32% | -$9.96K |
|
1156
PUT
Dick's Sporting Goods
DKS
$18.4B
| $130K | 0.01% |
105
+70
| +200% | +$2.94K |
|
1157
PUT
Intuit
INTU
$81.1B
| $130K | 0.01% |
244
+187
| +328% | +$18.1K |
|
|
ETP
1158
DELISTED
Energy Transfer Partners, L.P.
ETP
| $130K | 0.01% |
5,094
+1,658
| +48% | +$45.9K |
|
1159
CALL
Hormel Foods
HRL
$13.9B
| $129K | 0.01% |
370
+342
| +1,221% | +$12.2K |
|
1160
iShares US Financials ETF
IYF
$4.39B
| $129K | 0.01% |
2,934
-4,328
| -60% | -$193K |
|
1161
Newmont
NEM
$98.2B
| $129K | 0.01% |
7,214
+3,065
| +74% | +$56.3K |
|
1162
CALL
PepsiCo
PEP
$186B
| $129K | 0.01% |
500
-139
| -22% | -$13.9K |
|
1163
CALL
United States Oil Fund
USO
$2.45B
| $129K | 0.01% |
185
+38
| +26% | +$4.05K |
|
|
APOL
1164
DELISTED
Apollo Education Group Inc Class A
APOL
| $129K | 0.01% |
16,833
+8,383
| +99% | +$69.3K |
|
|
PMCS
1165
CALL
DELISTED
P M C SIERRA INC
PMCS
| $129K | 0.01% |
+498
| New | +$5.64K |
|
|
TSS
1166
DELISTED
Total System Services, Inc.
TSS
| $129K | 0.01% |
+2,608
| New | +$136K |
|
|
RHT
1167
CALL
DELISTED
Red Hat Inc
RHT
| $129K | 0.01% |
100
-373
| -79% | -$29.6K |
|
1168
CALL
Align Technology
ALGN
$12B
| $128K | 0.01% |
275
+99
| +56% | +$6.35K |
|
1169
CALL
Energy Transfer Partners
ET
$70.1B
| $128K | 0.01% |
3,114
+2,430
| +355% | +$45.4K |
|
1170
CALL
AT&T
T
$165B
| $128K | 0.01% |
1,033
-533
| -34% | -$13.5K |
|
1171
CALL
Vulcan Materials
VMC
$36.3B
| $128K | 0.01% |
235
+32
| +16% | +$3.1K |
|
|
BRCM
1172
CALL
DELISTED
BROADCOM CORP CL-A
BRCM
| $128K | 0.01% |
555
-253
| -31% | -$13.6K |
|
1173
CALL
Caterpillar
CAT
$409B
| $127K | 0.01% |
1,043
-1,317
| -56% | -$92.1K |
|
1174
CALL
EOG Resources
EOG
$78B
| $127K | 0.01% |
916
-1,683
| -65% | -$137K |
|
1175
Monro
MNRO
$525M
| $127K | 0.01% |
+1,926
| New | +$137K |
|
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.