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 | |
|---|---|---|---|---|---|---|
101
Comcast
CMCSA
$84.9B
| $2.16M | 0.17% |
76,728
+32,364
| +73% | +$975K |
|
|
VXX
102
PUT
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $2.16M | 0.17% |
464
-495
| -52% | -$157K |
|
103
PUT
Gilead Sciences
GILD
$165B
| $2.12M | 0.17% |
3,785
-3,794
| -50% | -$395K |
|
104
PUT
Caterpillar
CAT
$410B
| $2.1M | 0.16% |
4,994
+237
| +5% | +$16.6K |
|
105
Under Armour
UAA
$3.14B
| $2.06M | 0.16% |
51,447
+29,674
| +136% | +$1.34M |
|
106
CALL
Salesforce
CRM
$139B
| $2.02M | 0.16% |
1,373
-913
| -40% | -$71.3K |
|
|
VIAB
107
DELISTED
Viacom Inc. Class B
VIAB
| $2.02M | 0.16% |
49,017
+18,313
| +60% | +$859K |
|
108
PUT
Devon Energy
DVN
$50.9B
| $1.99M | 0.16% |
1,579
+1,301
| +468% | +$53.4K |
|
|
LNKD
109
DELISTED
LinkedIn Corporation
LNKD
| $1.95M | 0.15% |
+8,675
| New | +$1.97M |
|
110
PUT
Wynn Resorts
WYNN
$9.93B
| $1.91M | 0.15% |
1,766
+237
| +16% | +$15.8K |
|
111
JPMorgan Chase
JPM
$901B
| $1.91M | 0.15% |
28,876
-63,316
| -69% | -$4.12M |
|
112
Expedia Group
EXPE
$31.8B
| $1.9M | 0.15% |
15,311
+14,384
| +1,552% | +$1.82M |
|
113
CALL
Broadcom
AVGO
$1.84T
| $1.89M | 0.15% |
9,230
-3,110
| -25% | -$40.4K |
|
|
CVC
114
DELISTED
CABLEVISION SYS CP NY GRP CL-A
CVC
| $1.86M | 0.15% |
58,452
+8,565
| +17% | +$271K |
|
|
ETP
115
DELISTED
Energy Transfer Partners L.p.
ETP
| $1.86M | 0.15% |
55,151
+30,927
| +128% | +$1.21M |
|
116
Illumina
ILMN
$27.9B
| $1.85M | 0.15% |
+9,933
| New | +$1.6M |
|
|
117
CALL
Bausch Health
BHC
$1.75B
| $1.85M | 0.14% |
3,412
+2,417
| +243% | +$272K |
|
118
PUT
Freeport-McMoran
FCX
$89.9B
| $1.82M | 0.14% |
3,742
+1,793
| +92% | +$17.1K |
|
119
PUT
Baidu
BIDU
$36.8B
| $1.81M | 0.14% |
2,485
-776
| -24% | -$143K |
|
120
Polaris
PII
$4.14B
| $1.75M | 0.14% |
+20,332
| New | +$2.16M |
|
|
HZNP
121
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $1.73M | 0.14% |
79,959
+65,620
| +458% | +$1.28M |
|
|
CBI
122
DELISTED
Chicago Bridge & Iron Nv
CBI
| $1.7M | 0.13% |
+43,659
| New | +$1.81M |
|
123
Elevance Health
ELV
$82.9B
| $1.69M | 0.13% |
+12,107
| New | +$1.67M |
|
|
AMJ
124
DELISTED
JP Morgan Alerian MLP Index ETN 5/24/24
AMJ
| $1.68M | 0.13% |
58,086
+27,838
| +92% | +$854K |
|
|
MNK
125
DELISTED
MALLINCKRODT PUBLIC LIMITED COMPANY
MNK
| $1.68M | 0.13% |
22,530
-11,793
| -34% | -$794K |
|
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.