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 |
NVIDIA
NVDA
|
+$29.6M |
| 2 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$22.6M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$17.9M |
| 4 |
Netflix
NFLX
|
+$17.1M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$13.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$40.6M |
| 3 |
Walt Disney
DIS
|
+$25.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.5M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.48% |
| 2 | Technology | 0.51% |
| 3 | Communication Services | 0.5% |
| 4 | Healthcare | 0.37% |
| 5 | Industrials | 0.31% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
76
CALL
Mastercard
MA
$507B
| $52.9M | 0.14% |
1,999
-2,239
| -53% | -$560K |
|
77
CALL
UnitedHealth
UNH
$356B
| $52M | 0.14% |
2,131
-286
| -12% | -$68.8K |
|
78
PUT
IBM
IBM
$221B
| $51.7M | 0.14% |
3,923
-1,145
| -23% | -$150K |
|
79
CALL
Micron Technology
MU
$1.15T
| $51.2M | 0.14% |
13,270
-514
| -4% | -$19.6K |
|
80
CALL
Chevron
CVX
$409B
| $51M | 0.14% |
4,097
+737
| +22% | +$89.1K |
|
81
CALL
Advanced Micro Devices
AMD
$780B
| $50.4M | 0.14% |
16,602
-1,823
| -10% | -$52K |
|
82
CALL
Costco
COST
$406B
| $50.3M | 0.14% |
1,904
-202
| -10% | -$50.3K |
|
83
CALL
Home Depot
HD
$320B
| $49.5M | 0.14% |
2,380
+127
| +6% | +$25.3K |
|
84
PUT
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$7.13B
| $48.8M | 0.13% |
+4,488
| New | +$134K |
|
85
PUT
Merck
MRK
$371B
| $48.3M | 0.13% |
6,042
-2,371
| -28% | -$182K |
|
|
86
CALL
Johnson & Johnson
JNJ
$663B
| $48.1M | 0.13% |
3,456
+237
| +7% | +$32.8K |
|
87
CALL
Bank of America
BAC
$438B
| $47M | 0.13% |
16,210
-1,589
| -9% | -$45.8K |
|
|
88
PUT
Chevron
CVX
$409B
| $47M | 0.13% |
3,774
+37
| +1% | +$4.47K |
|
89
CALL
ExxonMobil
XOM
$656B
| $46.7M | 0.13% |
6,093
-704
| -10% | -$54.5K |
|
90
PUT
AbbVie
ABBV
$453B
| $46.4M | 0.13% |
6,377
+2,706
| +74% | +$213K |
|
91
PUT
American Tower
AMT
$81.9B
| $46M | 0.13% |
2,250
+1,025
| +84% | +$206K |
|
|
APC
92
PUT
DELISTED
Anadarko Petroleum
APC
| $45.8M | 0.13% |
6,497
+4,158
| +178% | +$279K |
|
|
SHNY
93
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $45.6M | 0.12% |
12,433
+2,891
| +30% | +$10.6M |
|
|
XYZ
94
PUT
Block Inc
XYZ
$49.7B
| $45.2M | 0.12% |
6,233
-881
| -12% | -$61.5K |
|
|
AGN
95
CALL
DELISTED
Allergan plc
AGN
| $45M | 0.12% |
2,686
+1,743
| +185% | +$241K |
|
96
PUT
Goldman Sachs
GS
$302B
| $44.6M | 0.12% |
2,182
-2,416
| -53% | -$478K |
|
|
97
CALL
AbbVie
ABBV
$453B
| $44.5M | 0.12% |
6,113
+1,765
| +41% | +$139K |
|
98
CALL
FedEx
FDX
$76.3B
| $44.3M | 0.12% |
2,700
+783
| +41% | +$137K |
|
|
99
PUT
Advanced Micro Devices
AMD
$780B
| $43.9M | 0.12% |
14,442
+1,901
| +15% | +$54.2K |
|
100
CALL
Beyond Meat
BYND
$203M
| $43.6M | 0.12% |
+90
| New | +$301K |
|
Similar funds
Simplex Trading's Q2 2019 Portfolio in Review
As of Q2 2019, Simplex Trading held 8,406 positions worth $36.6B, up 1.9% from $36B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q2 2019 filing shows 1,261 new, 2,604 increased, 3,015 reduced and 1,300 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M. The largest sale was Invesco QQQ Trust, an estimated $123M.
By sector, the portfolio is most concentrated in Miscellaneous at 97% of assets, up from 97% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q2 2019 buy was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M.
- Simplex Trading added most to NVIDIA in Q2 2019, an estimated $29.6M increase.
- Simplex Trading's biggest Q2 2019 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $40.6M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2019, selling an estimated $123M.
- Simplex Trading's ten largest holdings make up 35% of its $36.6B portfolio in Q2 2019.
- Simplex Trading opened 1,261 new positions and closed 1,300 in Q2 2019.
- Simplex Trading's portfolio value rose 1.9% quarter-over-quarter to $36.6B.
Based on Simplex Trading's 13F filing for Q2 2019, filed 26 Jul 2019.