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
|
+$148M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$67.3M |
| 3 |
Meta Platforms (Facebook)
META
|
+$63.2M |
| 4 |
Goldman Sachs
GS
|
+$23.9M |
| 5 |
Citigroup
C
|
+$23.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Berkshire Hathaway Class B
BRK.B
|
+$47.5M |
| 2 |
Apple
AAPL
|
+$46M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$44.5M |
| 4 |
Micron Technology
MU
|
+$29.1M |
| 5 |
Adobe
ADBE
|
+$22.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 1.13% |
| 2 | Communication Services | 0.89% |
| 3 | Technology | 0.68% |
| 4 | Industrials | 0.51% |
| 5 | Healthcare | 0.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1001
CALL
CF Industries
CF
$19.3B
| $2.73M | 0.01% |
501
-92
| -16% | -$4.44K |
|
1002
ConocoPhillips
COP
$147B
| $2.73M | 0.01% |
35,220
+26,995
| +328% | +$1.95M |
|
|
ANSS
1003
CALL
DELISTED
Ansys
ANSS
| $2.73M | 0.01% |
146
+29
| +25% | +$5.19K |
|
1004
PUT
TransDigm Group
TDG
$67.7B
| $2.72M | 0.01% |
73
+9
| +14% | +$3.24K |
|
1005
Applied Materials
AMAT
$445B
| $2.71M | 0.01% |
70,248
-160,201
| -70% | -$7.09M |
|
1006
PUT
Teck Resources
TECK
$29B
| $2.71M | 0.01% |
1,125
+421
| +60% | +$10.1K |
|
|
FITB
1007
CALL
Fifth Third Bancorp
FITB
$51.7B
| $2.71M | 0.01% |
969
+403
| +71% | +$11.8K |
|
1008
CALL
IPG Photonics
IPGP
$4.09B
| $2.7M | 0.01% |
173
+15
| +9% | +$2.78K |
|
|
BERY
1009
PUT
DELISTED
Berry Global Group, Inc.
BERY
| $2.7M | 0.01% |
608
+440
| +262% | +$19.3K |
|
1010
PUT
National Beverage
FIZZ
$2.84B
| $2.68M | 0.01% |
460
-122
| -21% | -$6.85K |
|
1011
PUT
Mohawk Industries
MHK
$6.69B
| $2.68M | 0.01% |
153
-126
| -45% | -$24.7K |
|
1012
PUT
Zimmer Biomet
ZBH
$17.3B
| $2.68M | 0.01% |
210
+179
| +577% | +$21.3K |
|
|
CERN
1013
CALL
DELISTED
Cerner Corp
CERN
| $2.68M | 0.01% |
416
-158
| -28% | -$10.1K |
|
1014
CALL
Royal Bank of Canada
RY
$289B
| $2.68M | 0.01% |
334
-34
| -9% | -$2.67K |
|
1015
PUT
TSMC
TSM
$2.16T
| $2.68M | 0.01% |
606
-479
| -44% | -$19.8K |
|
|
HTZ
1016
PUT
DELISTED
Hertz Global Holdings, Inc.
HTZ
| $2.67M | 0.01% |
1,878
+552
| +42% | +$8.3K |
|
|
SGMO
1017
PUT
DELISTED
SANGAMO THERAPEUTICS INC
SGMO
| $2.66M | 0.01% |
1,571
+1,154
| +277% | +$17.5K |
|
1018
PUT
GSK
GSK
$102B
| $2.66M | 0.01% |
530
+319
| +151% | +$16.2K |
|
1019
PUT
United States Oil Fund
USO
$2.51B
| $2.65M | 0.01% |
214
-82
| -28% | -$9.47K |
|
1020
Devon Energy
DVN
$52.3B
| $2.65M | 0.01% |
66,424
-35,760
| -35% | -$1.52M |
|
1021
CALL
Baxter International
BAX
$11.2B
| $2.65M | 0.01% |
344
-159
| -32% | -$11.8K |
|
1022
CALL
Post Holdings
POST
$4.05B
| $2.65M | 0.01% |
413
-91
| -18% | -$5.58K |
|
1023
PUT
Travelers Companies
TRV
$78.3B
| $2.65M | 0.01% |
204
+159
| +353% | +$20.5K |
|
|
NLSN
1024
CALL
DELISTED
Nielsen Holdings plc
NLSN
| $2.64M | 0.01% |
955
+717
| +301% | +$19.3K |
|
1025
CALL
Energy Transfer Partners
ET
$70.3B
| $2.64M | 0.01% |
1,515
+42
| +3% | +$746 |
|
Similar funds
Simplex Trading's Q3 2018 Portfolio in Review
As of Q3 2018, Simplex Trading held 8,699 positions worth $31.1B, up 22% from $25.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q3 2018 filing shows 1,336 new, 3,066 increased, 2,755 reduced and 1,315 closed positions. Its largest new stake was Invesco QQQ Trust: 371,806 shares worth $69.1M. The largest sale was Berkshire Hathaway Class B, an estimated $47.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 1.1% of assets, up from 0.92% a quarter earlier, followed by Communication Services and Technology.
- Simplex Trading's largest Q3 2018 buy was Invesco QQQ Trust: 371,806 shares worth $69.1M.
- Simplex Trading added most to Amazon in Q3 2018, an estimated $148M increase.
- Simplex Trading's biggest Q3 2018 reduction was Apple, cutting an estimated $46M.
- Simplex Trading fully exited Berkshire Hathaway Class B in Q3 2018, selling an estimated $47.5M.
- Simplex Trading's ten largest holdings make up 34% of its $31.1B portfolio in Q3 2018.
- Simplex Trading opened 1,336 new positions and closed 1,315 in Q3 2018.
- Simplex Trading's portfolio value rose 22% quarter-over-quarter to $31.1B.
Based on Simplex Trading's 13F filing for Q3 2018, filed 23 Oct 2018.