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 | |
|---|---|---|---|---|---|---|
|
STJ
1801
PUT
DELISTED
St Jude Medical
STJ
| $73K | ﹤0.01% |
435
+270
| +164% | +$21.8K |
|
1802
CALL
Agilent Technologies
A
$39.1B
| $72K | ﹤0.01% |
440
+151
| +52% | +$7.05K |
|
1803
Arbutus Biopharma
ABUS
$865M
| $72K | ﹤0.01% |
21,138
+14,028
| +197% | +$54.8K |
|
1804
PUT
Teucrium Soybean Fund
SOYB
$57.2M
| $72K | ﹤0.01% |
294
+98
| +50% | +$1.86K |
|
|
KDNY
1805
CALL
DELISTED
Chinook Therapeutics, Inc. Common Stock
KDNY
| $72K | ﹤0.01% |
61
-6
| -9% | -$424 |
|
|
BELFB
1806
CALL
Bel Fuse Inc Class B
BELFB
$3.88B
| $71K | ﹤0.01% |
130
+57
| +78% | +$1.22K |
|
1807
PUT
Avis
CAR
$5.63B
| $71K | ﹤0.01% |
384
+167
| +77% | +$6.05K |
|
1808
CALL
Darden Restaurants
DRI
$22.5B
| $71K | ﹤0.01% |
739
+101
| +16% | +$6.26K |
|
1809
CALL
Consolidated Edison
ED
$41.6B
| $71K | ﹤0.01% |
331
+128
| +63% | +$9.94K |
|
1810
PUT
Estee Lauder
EL
$29B
| $71K | ﹤0.01% |
368
+17
| +5% | +$1.55K |
|
1811
Installed Building Products
IBP
$6.13B
| $71K | ﹤0.01% |
1,997
-88
| -4% | -$3.06K |
|
1812
PUT
Intuitive Surgical
ISRG
$121B
| $71K | ﹤0.01% |
3,177
+2,178
| +218% | +$167K |
|
1813
Kinross Gold
KGC
$28.5B
| $71K | ﹤0.01% |
+16,980
| New | +$81.9K |
|
1814
CALL
MasTec
MTZ
$26.7B
| $71K | ﹤0.01% |
268
-414
| -61% | -$11.4K |
|
1815
Olin
OLN
$2.64B
| $71K | ﹤0.01% |
3,505
-7,744
| -69% | -$167K |
|
1816
CALL
Williams-Sonoma
WSM
$26.7B
| $71K | ﹤0.01% |
1,480
+1,118
| +309% | +$29.2K |
|
1817
PUT
Xerox
XRX
$337M
| $71K | ﹤0.01% |
122
-45
| -27% | -$1.16K |
|
1818
PUT
Yum! Brands
YUM
$41B
| $71K | ﹤0.01% |
1,000
+128
| +15% | +$8.17K |
|
1819
CALL
Applied Optoelectronics
AAOI
$8.04B
| $70K | ﹤0.01% |
297
+195
| +191% | +$3.02K |
|
1820
PUT
CACI
CACI
$10.8B
| $70K | ﹤0.01% |
67
+13
| +24% | +$1.25K |
|
1821
PUT
Carnival Corporation Ltd
CCL
$36.1B
| $70K | ﹤0.01% |
416
-263
| -39% | -$12.2K |
|
1822
PUT
Pacira BioSciences
PCRX
$1.02B
| $70K | ﹤0.01% |
79
-71
| -47% | -$2.78K |
|
1823
CALL
Unilever
UL
$131B
| $70K | ﹤0.01% |
465
+253
| +119% | +$13.4K |
|
1824
PUT
VEON
VEON
$3.53B
| $70K | ﹤0.01% |
79
+68
| +618% | +$6.83K |
|
1825
CALL
World Acceptance Corp
WRLD
$950M
| $70K | ﹤0.01% |
51
-24
| -32% | -$1.15K |
|
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.