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 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
51
PUT
Netflix
NFLX
$286B
| $4.48M | 0.3% |
98,110
+19,910
| +25% | +$191K |
|
52
PUT
Chipotle Mexican Grill
CMG
$42.5B
| $4.46M | 0.3% |
107,100
+49,000
| +84% | +$426K |
|
53
CALL
State Street Materials Select Sector SPDR ETF
XLB
$8.31B
| $4.45M | 0.3% |
28,352
-3,704
| -12% | -$86.2K |
|
54
PUT
Alibaba
BABA
$283B
| $4.39M | 0.29% |
10,600
+5,189
| +96% | +$406K |
|
|
AGN
55
PUT
DELISTED
Allergan plc
AGN
| $4.31M | 0.29% |
3,183
+2,254
| +243% | +$520K |
|
56
PUT
ProShares UltraShort Health Care
RXD
$3.35M
| $4.27M | 0.29% |
860
+124
| +17% | +$23.9K |
|
57
Amgen
AMGN
$198B
| $4.21M | 0.28% |
27,673
-6,632
| -19% | -$1.03M |
|
|
58
Alphabet (Google) Class A
GOOGL
$4.24T
| $4.19M | 0.28% |
119,060
-54,500
| -31% | -$2M |
|
59
Western Digital
WDC
$189B
| $4.14M | 0.28% |
+115,962
| New | +$3.82M |
|
60
Comcast
CMCSA
$84.9B
| $4.06M | 0.27% |
124,500
+89,134
| +252% | +$2.77M |
|
61
JPMorgan Chase
JPM
$918B
| $4.01M | 0.27% |
64,557
+51,601
| +398% | +$3.22M |
|
|
62
CALL
Netflix
NFLX
$286B
| $3.86M | 0.26% |
109,680
+48,780
| +80% | +$469K |
|
|
TWTR
63
PUT
DELISTED
Twitter, Inc.
TWTR
| $3.78M | 0.25% |
6,107
+90
| +1% | +$1.41K |
|
|
GOLD
64
DELISTED
Randgold Resources Ltd
GOLD
| $3.78M | 0.25% |
33,752
+16,141
| +92% | +$1.5M |
|
65
FedEx
FDX
$73.1B
| $3.77M | 0.25% |
+24,806
| New | +$4.02M |
|
|
SHPG
66
DELISTED
Shire pic
SHPG
| $3.73M | 0.25% |
20,289
+15,537
| +327% | +$2.81M |
|
67
Gilead Sciences
GILD
$165B
| $3.66M | 0.24% |
43,854
+27,576
| +169% | +$2.45M |
|
|
TWTR
68
DELISTED
Twitter, Inc.
TWTR
| $3.57M | 0.24% |
211,271
-125,034
| -37% | -$1.95M |
|
69
CALL
Apple
AAPL
$4.81T
| $3.53M | 0.24% |
72,640
-14,212
| -16% | -$353K |
|
70
PUT
Amazon
AMZN
$2.66T
| $3.53M | 0.24% |
113,720
-5,700
| -5% | -$193K |
|
71
CALL
Invesco QQQ Trust
QQQ
$471B
| $3.46M | 0.23% |
16,102
+9,613
| +148% | +$1.04M |
|
72
PepsiCo
PEP
$184B
| $3.17M | 0.21% |
+29,924
| New | +$3.09M |
|
73
Hershey
HSY
$34.8B
| $3.17M | 0.21% |
+27,909
| New | +$2.61M |
|
|
WCN
74
Waste Connections
WCN
$42.8B
| $3.13M | 0.21% |
+65,157
| New | +$2.96M |
|
75
Devon Energy
DVN
$50.9B
| $3.03M | 0.2% |
83,676
-13,550
| -14% | -$460K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.