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 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
51
Mastercard
MA
$476B
| $4.46M | 0.3% |
43,820
-29,581
| -40% | -$2.84M |
|
52
PUT
Bausch Health
BHC
$1.69B
| $4.45M | 0.3% |
7,479
-768
| -9% | -$19.9K |
|
|
CBPO
53
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $4.42M | 0.3% |
35,509
+12,255
| +53% | +$1.45M |
|
54
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$3.42B
| $4.27M | 0.29% |
27,770
+6,209
| +29% | +$891K |
|
55
Intuitive Surgical
ISRG
$124B
| $4.26M | 0.29% |
+52,947
| New | +$4.05M |
|
56
iShares Russell 2000 ETF
IWM
$82.4B
| $4.26M | 0.29% |
34,327
+8,433
| +33% | +$1.03M |
|
57
iShares Biotechnology ETF
IBB
$9.37B
| $4.22M | 0.29% |
43,734
+16,134
| +58% | +$1.53M |
|
|
TWTR
58
CALL
DELISTED
Twitter, Inc.
TWTR
| $4.2M | 0.28% |
20,298
+14,867
| +274% | +$280K |
|
|
AGN
59
PUT
DELISTED
Allergan plc
AGN
| $4.11M | 0.28% |
2,456
-727
| -23% | -$178K |
|
60
PUT
Meta Platforms (Facebook)
META
$1.63T
| $4.06M | 0.28% |
8,774
-3,498
| -29% | -$434K |
|
|
61
PUT
Gilead Sciences
GILD
$162B
| $3.9M | 0.26% |
6,062
+2,612
| +76% | +$212K |
|
62
Blackstone
BX
$152B
| $3.82M | 0.26% |
149,769
+94,598
| +171% | +$2.5M |
|
63
CALL
State Street Materials Select Sector SPDR ETF
XLB
$8.31B
| $3.82M | 0.26% |
35,528
+7,176
| +25% | +$173K |
|
|
PPLC
64
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $3.75M | 0.25% |
9,827
+4,868
| +98% | +$133K |
|
65
CALL
Invesco QQQ Trust
QQQ
$471B
| $3.69M | 0.25% |
13,430
-2,672
| -17% | -$308K |
|
66
PUT
Alibaba
BABA
$283B
| $3.67M | 0.25% |
10,150
-450
| -4% | -$41.7K |
|
67
Nike
NKE
$63.7B
| $3.62M | 0.25% |
+68,740
| New | +$3.88M |
|
68
Charter Communications
CHTR
$15.7B
| $3.62M | 0.25% |
13,402
+3,234
| +32% | +$817K |
|
69
Colgate-Palmolive
CL
$72.4B
| $3.6M | 0.24% |
48,583
+34,198
| +238% | +$2.53M |
|
70
CALL
Netflix
NFLX
$286B
| $3.58M | 0.24% |
78,940
-30,740
| -28% | -$293K |
|
71
Eli Lilly
LLY
$1.05T
| $3.5M | 0.24% |
+43,675
| New | +$3.5M |
|
|
72
PUT
Alphabet (Google) Class A
GOOGL
$4.24T
| $3.46M | 0.23% |
78,360
-28,700
| -27% | -$1.12M |
|
|
73
Bausch Health
BHC
$1.69B
| $3.45M | 0.23% |
140,719
-245,069
| -64% | -$6.34M |
|
74
CALL
Tesla
TSLA
$1.42T
| $3.45M | 0.23% |
59,355
-27,585
| -32% | -$398K |
|
75
PUT
VanEck Gold Miners ETF
GDX
$22.7B
| $3.44M | 0.23% |
22,397
+4,141
| +23% | +$119K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.