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 |
Amazon
AMZN
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
101
Eaton
ETN
$156B
| $3.55M | 0.15% |
45,625
-24,694
| -35% | -$1.88M |
|
102
Incyte
INCY
$23.5B
| $3.53M | 0.15% |
28,024
+4,762
| +20% | +$606K |
|
103
Macy's
M
$6.26B
| $3.49M | 0.15% |
150,158
-84,434
| -36% | -$2.16M |
|
104
YPF
YPF
$20.1B
| $3.48M | 0.15% |
159,103
+97,160
| +157% | +$2.35M |
|
105
CALL
FedEx
FDX
$75.2B
| $3.45M | 0.15% |
2,667
+7
| +0.3% | +$1.38K |
|
106
Applied Materials
AMAT
$448B
| $3.39M | 0.15% |
+82,125
| New | +$3.49M |
|
107
PUT
SLB Ltd
SLB
$69.7B
| $3.38M | 0.15% |
7,901
+3,684
| +87% | +$264K |
|
108
PUT
Chipotle Mexican Grill
CMG
$42.7B
| $3.36M | 0.15% |
93,050
-46,600
| -33% | -$432K |
|
109
Halliburton
HAL
$27.7B
| $3.36M | 0.15% |
78,608
+66,447
| +546% | +$3.05M |
|
110
CALL
Netflix
NFLX
$286B
| $3.35M | 0.15% |
37,140
-3,130
| -8% | -$48.2K |
|
|
FL
111
DELISTED
Foot Locker
FL
| $3.34M | 0.15% |
67,767
+57,641
| +569% | +$3.74M |
|
|
APC
112
DELISTED
Anadarko Petroleum
APC
| $3.33M | 0.14% |
73,569
-10,630
| -13% | -$564K |
|
113
Vertex Pharmaceuticals
VRTX
$122B
| $3.33M | 0.14% |
+25,865
| New | +$3.11M |
|
114
Kraft Heinz
KHC
$30.6B
| $3.28M | 0.14% |
38,266
+35,668
| +1,373% | +$3.23M |
|
115
PUT
Alibaba
BABA
$283B
| $3.27M | 0.14% |
12,119
+3,997
| +49% | +$494K |
|
|
HES
116
DELISTED
Hess
HES
| $3.25M | 0.14% |
74,134
+68,461
| +1,207% | +$3.2M |
|
117
PUT
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $3.25M | 0.14% |
17,531
-4,051
| -19% | -$291K |
|
118
CALL
State Street Materials Select Sector SPDR ETF
XLB
$8.31B
| $3.21M | 0.14% |
58,050
+13,074
| +29% | +$347K |
|
|
X
119
PUT
DELISTED
US Steel
X
| $3.21M | 0.14% |
12,421
+5,312
| +75% | +$126K |
|
120
Ciena
CIEN
$57.9B
| $3.11M | 0.14% |
124,368
+38,970
| +46% | +$934K |
|
121
Weibo
WB
$1.97B
| $3.03M | 0.13% |
45,641
+17,182
| +60% | +$1.11M |
|
|
STRP
122
CALL
DELISTED
Straight Path Communications Inc.
STRP
| $3.01M | 0.13% |
1,557
+1,206
| +344% | +$184K |
|
123
HSBC
HSBC
$347B
| $2.98M | 0.13% |
70,252
+12,005
| +21% | +$466K |
|
124
CALL
Boeing
BA
$161B
| $2.97M | 0.13% |
3,119
-86
| -3% | -$16K |
|
|
VXZ
125
PUT
DELISTED
iPath S&P 500 VIX Mid-Term Futures ETN due 1/30/2019
VXZ
| $2.97M | 0.13% |
5,422
-5,096
| -48% | -$126K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.