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 | |
|---|---|---|---|---|---|---|
376
CALL
AB InBev
BUD
$161B
| $9.62M | 0.03% |
1,099
-284
| -21% | -$27.7K |
|
377
PUT
Cisco
CSCO
$442B
| $9.62M | 0.03% |
1,978
-921
| -32% | -$41.4K |
|
|
ABMD
378
CALL
DELISTED
Abiomed Inc
ABMD
| $9.58M | 0.03% |
213
+142
| +200% | +$56K |
|
|
ABMD
379
DELISTED
Abiomed Inc
ABMD
| $9.57M | 0.03% |
21,279
+4,815
| +29% | +$1.9M |
|
380
CALL
Verizon
VZ
$185B
| $9.56M | 0.03% |
1,790
-3,378
| -65% | -$179K |
|
381
PUT
F5
FFIV
$22.6B
| $9.55M | 0.03% |
479
+284
| +146% | +$52K |
|
382
CALL
RH
RH
$3.31B
| $9.55M | 0.03% |
729
-60
| -8% | -$8.42K |
|
383
PUT
VeriSign
VRSN
$23.9B
| $9.54M | 0.03% |
596
+533
| +846% | +$81.7K |
|
|
ETFC
384
PUT
DELISTED
E*Trade Financial Corporation
ETFC
| $9.5M | 0.03% |
1,814
-73
| -4% | -$4.28K |
|
385
PUT
Lumen
LUMN
$6.9B
| $9.5M | 0.03% |
4,480
+1,920
| +75% | +$40.2K |
|
386
CALL
NetEase
NTES
$77.6B
| $9.47M | 0.03% |
2,075
-1,345
| -39% | -$61.9K |
|
387
PUT
Papa John's
PZZA
$1.05B
| $9.46M | 0.03% |
1,845
+898
| +95% | +$41.5K |
|
388
CALL
Duke Energy
DUK
$99.7B
| $9.44M | 0.03% |
1,180
+875
| +287% | +$70.8K |
|
389
PUT
Cintas
CTAS
$80.6B
| $9.38M | 0.03% |
1,896
-56
| -3% | -$2.89K |
|
390
PUT
RTX Corp
RTX
$262B
| $9.35M | 0.03% |
1,063
-399
| -27% | -$33.5K |
|
391
PUT
United Parcel Service
UPS
$98.5B
| $9.34M | 0.03% |
800
-686
| -46% | -$80.7K |
|
|
AMRN
392
PUT
Amarin Corp
AMRN
$287M
| $9.25M | 0.03% |
284
+269
| +1,793% | +$20.3K |
|
393
PUT
Royal Caribbean
RCL
$76.7B
| $9.21M | 0.03% |
709
+361
| +104% | +$42.3K |
|
394
PUT
Dollar General
DG
$26.5B
| $9.15M | 0.03% |
837
+562
| +204% | +$58.4K |
|
|
PARA
395
CALL
DELISTED
Paramount Global Class B
PARA
| $9.13M | 0.03% |
1,590
+1,125
| +242% | +$62.1K |
|
396
CALL
APA Corp
APA
$12.8B
| $9.13M | 0.03% |
1,916
+910
| +90% | +$41K |
|
397
CALL
MetLife
MET
$60B
| $9.1M | 0.03% |
2,112
+770
| +57% | +$35.2K |
|
398
PUT
Delta Air Lines
DAL
$54.9B
| $9.1M | 0.03% |
1,573
-861
| -35% | -$47.4K |
|
|
EXAS
399
CALL
DELISTED
Exact Sciences
EXAS
| $9.08M | 0.03% |
1,151
+696
| +153% | +$45.4K |
|
400
PUT
Dollar Tree
DLTR
$23.5B
| $9.01M | 0.03% |
1,105
-30
| -3% | -$2.63K |
|
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.