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 |
Invesco QQQ Trust
QQQ
|
+$86.9M |
| 2 |
Walt Disney
DIS
|
+$25.5M |
| 3 |
Baidu
BIDU
|
+$12.3M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$12.3M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$66M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$60.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$33.9M |
| 4 |
Apple
AAPL
|
+$21.1M |
| 5 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$18.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 0.58% |
| 2 | Technology | 0.42% |
| 3 | Healthcare | 0.34% |
| 4 | Consumer Discretionary | 0.29% |
| 5 | Industrials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
101
PUT
Chevron
CVX
$384B
| $46M | 0.13% |
3,737
+109
| +3% | +$12.9K |
|
102
PUT
PayPal
PYPL
$49B
| $45.6M | 0.13% |
4,392
+42
| +1% | +$3.98K |
|
103
PUT
ServiceNow
NOW
$98.4B
| $45.4M | 0.13% |
9,200
+4,335
| +89% | +$191K |
|
104
CALL
Walmart Inc
WMT
$870B
| $45.1M | 0.13% |
13,875
-3,174
| -19% | -$103K |
|
105
CALL
Johnson & Johnson
JNJ
$615B
| $45M | 0.13% |
3,219
-385
| -11% | -$51.6K |
|
106
PUT
Biogen
BIIB
$29.1B
| $44.9M | 0.12% |
1,899
+913
| +93% | +$287K |
|
107
PUT
Altria Group
MO
$121B
| $44.7M | 0.12% |
7,788
-696
| -8% | -$35.6K |
|
108
PUT
Verizon
VZ
$185B
| $44.2M | 0.12% |
7,483
+556
| +8% | +$31.5K |
|
109
PUT
Mastercard
MA
$470B
| $43.6M | 0.12% |
1,851
-1,534
| -45% | -$330K |
|
110
CALL
iShares Morningstar Value ETF
ILCV
$1.3B
| $43.4M | 0.12% |
10,416
-3,512
| -25% | -$181K |
|
111
CALL
Home Depot
HD
$330B
| $43.2M | 0.12% |
2,253
-553
| -20% | -$101K |
|
112
CALL
United Parcel Service
UPS
$98.5B
| $43.2M | 0.12% |
3,867
+1,825
| +89% | +$194K |
|
113
CALL
CVS Health
CVS
$138B
| $42.3M | 0.12% |
7,850
+2,884
| +58% | +$178K |
|
114
CALL
Wynn Resorts
WYNN
$9.79B
| $42.1M | 0.12% |
3,531
-266
| -7% | -$31.8K |
|
|
TIF
115
PUT
DELISTED
Tiffany & Co.
TIF
| $42.1M | 0.12% |
3,987
+2,095
| +111% | +$192K |
|
|
116
CALL
Chevron
CVX
$384B
| $41.4M | 0.12% |
3,360
+99
| +3% | +$11.7K |
|
117
PUT
Deere & Co
DE
$164B
| $41.2M | 0.11% |
2,575
+1,474
| +134% | +$236K |
|
118
State Street SPDR S&P 500 ETF Trust
SPY
$787B
| $41.1M | 0.11% |
145,460
-18,239
| -11% | -$4.96M |
|
119
CALL
AT&T
T
$160B
| $40.9M | 0.11% |
17,286
-7,041
| -29% | -$162K |
|
120
CALL
Cisco
CSCO
$442B
| $40.5M | 0.11% |
7,497
+192
| +3% | +$9.33K |
|
121
PUT
Coca-Cola
KO
$354B
| $39.9M | 0.11% |
8,514
+5,027
| +144% | +$235K |
|
122
CALL
AutoZone
AZO
$48.5B
| $39.6M | 0.11% |
387
+97
| +33% | +$87.1K |
|
123
CALL
PepsiCo
PEP
$185B
| $39M | 0.11% |
3,183
-85
| -3% | -$9.69K |
|
124
PUT
lululemon athletica
LULU
$12.9B
| $38.4M | 0.11% |
2,344
+209
| +10% | +$30.5K |
|
125
PUT
Visa
V
$672B
| $38.3M | 0.11% |
2,453
-1,370
| -36% | -$197K |
|
Similar funds
Simplex Trading's Q1 2019 Portfolio in Review
As of Q1 2019, Simplex Trading held 8,479 positions worth $36B, up 5.5% from $34.1B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q1 2019 filing shows 1,472 new, 3,049 increased, 2,419 reduced and 1,324 closed positions. Its largest new stake was Walt Disney: 228,471 shares worth $25.4M. The largest sale was Amazon, an estimated $66M.
By sector, the portfolio is most concentrated in Communication Services at 0.58% of assets, up from 0.49% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q1 2019 buy was Walt Disney: 228,471 shares worth $25.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q1 2019, an estimated $86.9M increase.
- Simplex Trading's biggest Q1 2019 reduction was iShares Russell 2000 ETF, cutting an estimated $60.3M.
- Simplex Trading fully exited Amazon in Q1 2019, selling an estimated $66M.
- Simplex Trading's ten largest holdings make up 35% of its $36B portfolio in Q1 2019.
- Simplex Trading opened 1,472 new positions and closed 1,324 in Q1 2019.
- Simplex Trading's portfolio value rose 5.5% quarter-over-quarter to $36B.
Based on Simplex Trading's 13F filing for Q1 2019, filed 18 Apr 2019.