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 | |
|---|---|---|---|---|---|---|
|
NBL
926
CALL
DELISTED
Noble Energy, Inc.
NBL
| $3.02M | 0.01% |
970
+880
| +978% | +$28.2K |
|
927
PUT
Columbia Sportswear
COLM
$3.14B
| $3.02M | 0.01% |
325
+323
| +16,150% | +$29.3K |
|
928
PUT
Xerox
XRX
$333M
| $3.02M | 0.01% |
1,121
+392
| +54% | +$10.4K |
|
929
Starbucks
SBUX
$117B
| $3.01M | 0.01% |
52,915
-71,402
| -57% | -$3.78M |
|
930
CALL
T. Rowe Price
TROW
$24.5B
| $2.99M | 0.01% |
274
-123
| -31% | -$14.2K |
|
931
CALL
Fluor
FLR
$7.31B
| $2.98M | 0.01% |
513
-120
| -19% | -$6.54K |
|
932
Zebra Technologies
ZBRA
$12.2B
| $2.98M | 0.01% |
16,857
+12,047
| +250% | +$1.93M |
|
|
AMTD
933
CALL
DELISTED
TD Ameritrade Holding Corp
AMTD
| $2.98M | 0.01% |
564
+272
| +93% | +$15.5K |
|
934
CALL
Realty Income
O
$60.4B
| $2.98M | 0.01% |
540
+18
| +3% | +$991 |
|
935
State Street Consumer Discretionary Select Sector SPDR ETF
XLY
$21.3B
| $2.97M | 0.01% |
50,680
+19,806
| +64% | +$1.13M |
|
936
CALL
Weibo
WB
$1.91B
| $2.97M | 0.01% |
406
-1,136
| -74% | -$91.4K |
|
937
Western Digital
WDC
$197B
| $2.97M | 0.01% |
67,100
-6,746
| -9% | -$342K |
|
|
ICPT
938
CALL
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $2.97M | 0.01% |
235
+34
| +17% | +$3.6K |
|
939
PUT
Textron
TXT
$16.2B
| $2.97M | 0.01% |
415
+77
| +23% | +$5.25K |
|
940
CALL
Bath & Body Works
BBWI
$3.88B
| $2.96M | 0.01% |
1,210
+215
| +22% | +$5.38K |
|
941
CALL
Sprouts Farmers Market
SFM
$6.84B
| $2.96M | 0.01% |
1,080
-550
| -34% | -$13.5K |
|
942
PUT
Under Armour Class C
UA
$2.78B
| $2.95M | 0.01% |
1,433
+685
| +92% | +$13.2K |
|
|
EGRX
943
PUT
DELISTED
Eagle Pharmaceuticals, Inc.
EGRX
| $2.95M | 0.01% |
426
+272
| +177% | +$20.6K |
|
944
CALL
Omnicom Group
OMC
$22.4B
| $2.94M | 0.01% |
433
+181
| +72% | +$12.7K |
|
945
PUT
Hyatt Hotels
H
$17.2B
| $2.94M | 0.01% |
370
+69
| +23% | +$5.42K |
|
946
PUT
Synopsys
SNPS
$71.4B
| $2.94M | 0.01% |
298
+278
| +1,390% | +$26.5K |
|
|
STI
947
CALL
DELISTED
SunTrust Banks, Inc.
STI
| $2.94M | 0.01% |
440
-231
| -34% | -$16.5K |
|
948
PUT
NextEra Energy
NEE
$187B
| $2.93M | 0.01% |
700
+212
| +43% | +$9.03K |
|
949
Capital One
COF
$121B
| $2.93M | 0.01% |
+30,825
| New | +$3M |
|
950
PUT
Medifast
MED
$107M
| $2.92M | 0.01% |
132
+92
| +230% | +$18.7K |
|
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.