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 | |
|---|---|---|---|---|---|---|
|
IMOS
3451
PUT
ChipMOS TECHNOLOGIES
IMOS
$1.89B
| $12K | ﹤0.01% |
127
-56
| -31% | -$1.16K |
|
3452
CALL
Jefferies Financial Group
JEF
$12.8B
| $12K | ﹤0.01% |
108
+80
| +286% | +$1.32K |
|
3453
CALL
Kforce
KFRC
$1.05B
| $12K | ﹤0.01% |
+57
| New | +$1.06K |
|
3454
PUT
Kodak
KODK
$782M
| $12K | ﹤0.01% |
131
-59
| -31% | -$935 |
|
3455
Direxion Daily Mid Cap Bull 3X ETF
MIDU
$70.3M
| $12K | ﹤0.01% |
+455
| New | +$12.3K |
|
|
NGD
3456
CALL
DELISTED
New Gold Inc
NGD
| $12K | ﹤0.01% |
204
-197
| -49% | -$982 |
|
|
NOAH
3457
PUT
Noah Holdings
NOAH
$594M
| $12K | ﹤0.01% |
128
+11
| +9% | +$288 |
|
3458
PUT
Pultegroup
PHM
$24.6B
| $12K | ﹤0.01% |
192
-117
| -38% | -$2.42K |
|
3459
CALL
Douglas Dynamics
PLOW
$1.04B
| $12K | ﹤0.01% |
17
-47
| -73% | -$1.41K |
|
3460
QCR Holdings
QCRH
$1.66B
| $12K | ﹤0.01% |
398
| – | – |
|
3461
Richardson Electronics
RELL
$261M
| $12K | ﹤0.01% |
1,902
+902
| +90% | +$5.71K |
|
3462
CALL
Ryanair
RYAAY
$29.8B
| $12K | ﹤0.01% |
180
-23
| -11% | -$668 |
|
|
3463
Ryanair
RYAAY
$29.8B
| $12K | ﹤0.01% |
420
-300
| -42% | -$8.71K |
|
3464
CALL
SAP
SAP
$202B
| $12K | ﹤0.01% |
9
-57
| -86% | -$4.9K |
|
3465
CALL
Comscore
SCOR
$106M
| $12K | ﹤0.01% |
5
-63
| -93% | -$35.7K |
|
|
SHYF
3466
CALL
DELISTED
The Shyft Group
SHYF
| $12K | ﹤0.01% |
+278
| New | +$2.42K |
|
3467
PUT
SM Energy
SM
$7.38B
| $12K | ﹤0.01% |
101
+67
| +197% | +$2.15K |
|
3468
CALL
Snap-on
SNA
$21B
| $12K | ﹤0.01% |
66
+43
| +187% | +$6.64K |
|
3469
PUT
Sony
SONY
$130B
| $12K | ﹤0.01% |
1,190
+320
| +37% | +$2.05K |
|
3470
CALL
Tucows
TCX
$96.1M
| $12K | ﹤0.01% |
57
+33
| +138% | +$928 |
|
|
THS
3471
PUT
DELISTED
Treehouse Foods
THS
| $12K | ﹤0.01% |
208
+132
| +174% | +$12.7K |
|
3472
PUT
Turkcell
TKC
$4.79B
| $12K | ﹤0.01% |
84
+50
| +147% | +$429 |
|
3473
CALL
Travel + Leisure Co
TNL
$4.64B
| $12K | ﹤0.01% |
126
-149
| -54% | -$4.76K |
|
3474
PUT
UBS Group
UBS
$171B
| $12K | ﹤0.01% |
432
-374
| -46% | -$5.09K |
|
3475
PUT
Vulcan Materials
VMC
$36.8B
| $12K | ﹤0.01% |
21
+4
| +24% | +$472 |
|
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.