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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
76
Corpay
CPAY
$23.9B
| $2.77M | 0.22% |
18,647
+16,385
| +724% | +$2.13M |
|
|
77
PUT
SPDR Gold Trust
GLD
$132B
| $2.75M | 0.22% |
9,245
+5,742
| +164% | +$651K |
|
78
Deere & Co
DE
$158B
| $2.7M | 0.22% |
35,133
-12,938
| -27% | -$1.01M |
|
79
Devon Energy
DVN
$50.9B
| $2.67M | 0.21% |
97,226
+54,286
| +126% | +$1.32M |
|
80
Macy's
M
$6.26B
| $2.62M | 0.21% |
59,366
+56,934
| +2,341% | +$2.35M |
|
81
ProShares UltraShort S&P500
SDS
$396M
| $2.61M | 0.21% |
1,377
+25
| +2% | +$53.7K |
|
82
General Motors
GM
$71.7B
| $2.59M | 0.21% |
82,442
+8,815
| +12% | +$265K |
|
83
Nike
NKE
$63.7B
| $2.56M | 0.2% |
+41,649
| New | +$2.52M |
|
84
PUT
Bank of America
BAC
$430B
| $2.54M | 0.2% |
7,415
+5,177
| +231% | +$69.9K |
|
85
ProShares Short VIX Short-Term Futures ETF
SVXY
$225M
| $2.54M | 0.2% |
+50,237
| New | +$2.02M |
|
86
CALL
IBM
IBM
$198B
| $2.53M | 0.2% |
3,216
+479
| +18% | +$61.2K |
|
87
PUT
GoPro
GPRO
$125M
| $2.52M | 0.2% |
5,274
+271
| +5% | +$3.36K |
|
88
Coca-Cola
KO
$353B
| $2.48M | 0.2% |
+53,548
| New | +$2.33M |
|
89
Blackstone
BX
$152B
| $2.48M | 0.2% |
88,493
+41,098
| +87% | +$1.09M |
|
90
Direxion Daily S&P 500 Bull 3x ETF
SPXL
$6.84B
| $2.43M | 0.19% |
116,512
+102,336
| +722% | +$1.83M |
|
91
CALL
Microsoft
MSFT
$2.95T
| $2.42M | 0.19% |
7,774
+2,668
| +52% | +$140K |
|
|
SCTY
92
PUT
DELISTED
SolarCity Corporation
SCTY
| $2.4M | 0.19% |
4,194
+1,347
| +47% | +$38.4K |
|
93
PUT
Baidu
BIDU
$36.8B
| $2.38M | 0.19% |
2,793
+308
| +12% | +$52.4K |
|
94
CALL
AT&T
T
$155B
| $2.33M | 0.19% |
8,027
+6,994
| +677% | +$194K |
|
|
VXX
95
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $2.3M | 0.18% |
+8,164
| New | +$3.07M |
|
96
Verizon
VZ
$183B
| $2.29M | 0.18% |
+42,401
| New | +$2.12M |
|
|
AGN
97
PUT
DELISTED
Allergan plc
AGN
| $2.29M | 0.18% |
929
-696
| -43% | -$199K |
|
|
CVC
98
DELISTED
CABLEVISION SYS CP NY GRP CL-A
CVC
| $2.28M | 0.18% |
69,239
+10,787
| +18% | +$348K |
|
|
99
CALL
Verizon
VZ
$183B
| $2.26M | 0.18% |
5,026
+3,780
| +303% | +$189K |
|
|
HMIN
100
DELISTED
HOMEINNS HOTEL GROUP SPONSORED ADR
HMIN
| $2.25M | 0.18% |
63,153
+53,045
| +525% | +$1.83M |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.