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 | |
|---|---|---|---|---|---|---|
|
PPLI
626
CALL
People Inc
PPLI
$3.23B
| $4.92M | 0.02% |
1,270
-1,343
| -51% | -$43.6K |
|
627
Verizon
VZ
$185B
| $4.92M | 0.02% |
+92,102
| New | +$4.88M |
|
628
Phillips 66
PSX
$84.8B
| $4.92M | 0.02% |
43,614
-4,904
| -10% | -$567K |
|
629
CALL
ASML
ASML
$692B
| $4.91M | 0.02% |
261
+121
| +86% | +$24.3K |
|
630
CALL
Truist Financial
TFC
$63.2B
| $4.89M | 0.02% |
1,007
+123
| +14% | +$6.31K |
|
631
CALL
Nexstar Media Group
NXST
$5.55B
| $4.88M | 0.02% |
600
-584
| -49% | -$45.9K |
|
632
CALL
Synchrony
SYF
$24.5B
| $4.88M | 0.02% |
1,571
+897
| +133% | +$28.6K |
|
633
PUT
Devon Energy
DVN
$51.8B
| $4.87M | 0.02% |
1,220
-790
| -39% | -$33.6K |
|
|
RHT
634
DELISTED
Red Hat Inc
RHT
| $4.86M | 0.02% |
35,681
+10,764
| +43% | +$1.54M |
|
635
Regeneron Pharmaceuticals
REGN
$68.3B
| $4.85M | 0.02% |
12,014
-6,031
| -33% | -$2.3M |
|
636
CALL
Kroger
KR
$35.3B
| $4.84M | 0.02% |
1,663
+40
| +2% | +$1.19K |
|
637
CALL
Xerox
XRX
$348M
| $4.82M | 0.02% |
1,787
+1
| +0.1% | +$26 |
|
|
GOLD
638
CALL
DELISTED
Randgold Resources Ltd
GOLD
| $4.82M | 0.02% |
683
+340
| +99% | +$23.4K |
|
639
CALL
Cleveland-Cliffs
CLF
$5.39B
| $4.81M | 0.02% |
3,801
+3,081
| +428% | +$31.7K |
|
640
PUT
TAL Education Group
TAL
$5.73B
| $4.81M | 0.02% |
1,871
+340
| +22% | +$11K |
|
641
PUT
Fair Isaac
FICO
$28.3B
| $4.8M | 0.02% |
210
+118
| +128% | +$25.6K |
|
642
PUT
Lear
LEA
$7.2B
| $4.8M | 0.02% |
331
+293
| +771% | +$50.2K |
|
643
CALL
General Mills
GIS
$19.7B
| $4.8M | 0.02% |
1,118
+138
| +14% | +$6.25K |
|
644
PUT
Zebra Technologies
ZBRA
$12.5B
| $4.79M | 0.02% |
271
+26
| +11% | +$4.17K |
|
|
WW
645
CALL
DELISTED
WW International
WW
| $4.79M | 0.02% |
665
+261
| +65% | +$21.2K |
|
646
CALL
HCA Healthcare
HCA
$82.5B
| $4.79M | 0.02% |
344
+46
| +15% | +$5.73K |
|
|
SFIX
647
CALL
Stitch Fix
SFIX
$500M
| $4.78M | 0.02% |
1,093
+856
| +361% | +$31.2K |
|
648
PUT
Centene
CNC
$32.5B
| $4.78M | 0.02% |
660
+418
| +173% | +$29K |
|
|
WWE
649
PUT
DELISTED
World Wrestling Entertainment
WWE
| $4.75M | 0.02% |
491
+273
| +125% | +$22.6K |
|
|
BZUN
650
PUT
Baozun
BZUN
$144M
| $4.74M | 0.02% |
975
+253
| +35% | +$13.7K |
|
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.