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 | |
|---|---|---|---|---|---|---|
251
Hershey
HSY
$34.9B
| $874K | 0.07% |
+9,794
| New | +$878K |
|
|
FIT
252
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $870K | 0.07% |
29,408
+4,936
| +20% | +$163K |
|
253
Kraft Heinz
KHC
$30.9B
| $868K | 0.07% |
11,939
-9,990
| -46% | -$737K |
|
|
GOLD
254
DELISTED
Randgold Resources Ltd
GOLD
| $866K | 0.07% |
14,091
-114
| -0.8% | -$7.2K |
|
255
ProShares UltraPro Short S&P 500
SPXU
$420M
| $864K | 0.07% |
68
+15
| +28% | +$193K |
|
256
Post Holdings
POST
$4.16B
| $863K | 0.07% |
21,395
+7,472
| +54% | +$309K |
|
257
CALL
Intel
INTC
$531B
| $854K | 0.07% |
1,616
+606
| +60% | +$20.5K |
|
258
CALL
Teva Pharmaceuticals
TEVA
$35.9B
| $846K | 0.07% |
3,193
-89
| -3% | -$5.5K |
|
|
ESV
259
PUT
DELISTED
Ensco Rowan plc
ESV
| $846K | 0.07% |
129
+21
| +19% | +$1.37K |
|
|
MDVN
260
DELISTED
MEDIVATION, INC.
MDVN
| $846K | 0.07% |
17,507
-17,824
| -50% | -$769K |
|
261
GSK
GSK
$103B
| $844K | 0.07% |
16,740
+11,154
| +200% | +$569K |
|
262
Target
TGT
$62.6B
| $825K | 0.06% |
11,373
+1,593
| +16% | +$119K |
|
263
Lennox International
LII
$18.5B
| $821K | 0.06% |
6,578
+4,178
| +174% | +$538K |
|
264
Enterprise Products Partners
EPD
$84.4B
| $819K | 0.06% |
+32,034
| New | +$832K |
|
|
KKD
265
DELISTED
KRISPY KREME DOUGHNUTS INC
KKD
| $810K | 0.06% |
53,787
-8,142
| -13% | -$116K |
|
|
MDAS
266
DELISTED
MEDASSETS INC COM STK (DE)
MDAS
| $803K | 0.06% |
25,983
+25,934
| +52,927% | +$721K |
|
267
PUT
Under Armour
UAA
$3.12B
| $801K | 0.06% |
2,747
+189
| +7% | +$8.56K |
|
268
Yum! Brands
YUM
$41B
| $799K | 0.06% |
15,233
-114,312
| -88% | -$5.97M |
|
269
VeriSign
VRSN
$23.9B
| $790K | 0.06% |
9,045
+8,785
| +3,379% | +$732K |
|
|
TGI
270
DELISTED
Triumph Group
TGI
| $788K | 0.06% |
19,832
+19,651
| +10,857% | +$794K |
|
271
Helmerich & Payne
HP
$3.53B
| $785K | 0.06% |
14,670
+11,023
| +302% | +$610K |
|
272
ProShares Ultra Bloomberg Crude Oil
UCO
$430M
| $784K | 0.06% |
5,004
-472
| -9% | -$111K |
|
|
HAR
273
DELISTED
Harman International Industries
HAR
| $783K | 0.06% |
8,312
+6,880
| +480% | +$698K |
|
|
ASRT
274
DELISTED
Assertio
ASRT
| $780K | 0.06% |
717
+661
| +1,180% | +$744K |
|
275
Dycom Industries
DY
$12.8B
| $779K | 0.06% |
+11,140
| New | +$885K |
|
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.