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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
101
PUT
3M
MMM
$89.1B
| $55.7M | 0.1% |
4,878
+3,163
| +184% | +$416K |
|
102
PUT
Procter & Gamble
PG
$345B
| $53.8M | 0.09% |
4,893
-684
| -12% | -$82.1K |
|
103
CALL
JD.com
JD
$41.1B
| $53.8M | 0.09% |
13,288
+4,532
| +52% | +$181K |
|
104
CALL
CVS Health
CVS
$141B
| $53.5M | 0.09% |
9,018
+647
| +8% | +$43.2K |
|
105
PUT
Bank of America
BAC
$430B
| $53.1M | 0.09% |
25,016
+19,588
| +361% | +$587K |
|
|
XYZ
106
CALL
Block Inc
XYZ
$47.8B
| $52.9M | 0.09% |
10,102
+7,466
| +283% | +$511K |
|
107
CALL
Merck
MRK
$312B
| $52.9M | 0.09% |
7,206
+2,053
| +40% | +$161K |
|
108
CALL
Booking.com
BKNG
$139B
| $52.5M | 0.09% |
9,750
-9,950
| -51% | -$698K |
|
109
PUT
Intuitive Surgical
ISRG
$124B
| $52.1M | 0.09% |
3,156
-2,088
| -40% | -$382K |
|
110
PUT
UnitedHealth
UNH
$396B
| $52.1M | 0.09% |
2,089
-236
| -10% | -$64.9K |
|
111
PUT
Biogen
BIIB
$30B
| $51.3M | 0.09% |
1,622
-163
| -9% | -$49.5K |
|
112
PUT
Cisco
CSCO
$442B
| $51.2M | 0.09% |
13,026
+7,167
| +122% | +$314K |
|
113
PUT
Walmart Inc
WMT
$878B
| $51.2M | 0.09% |
13,506
+3,867
| +40% | +$149K |
|
114
CALL
AT&T
T
$155B
| $51.1M | 0.09% |
23,228
+9,081
| +64% | +$248K |
|
|
115
CALL
Biogen
BIIB
$30B
| $50.8M | 0.09% |
1,607
-458
| -22% | -$139K |
|
116
PUT
Intel
INTC
$530B
| $50.6M | 0.09% |
9,355
+2,368
| +34% | +$140K |
|
117
PUT
McDonald's
MCD
$188B
| $49.7M | 0.09% |
3,003
+100
| +3% | +$19.7K |
|
118
CALL
AbbVie
ABBV
$452B
| $49.5M | 0.09% |
6,503
+1,247
| +24% | +$106K |
|
119
CALL
PayPal
PYPL
$49.3B
| $49.4M | 0.09% |
5,159
-1,512
| -23% | -$167K |
|
120
Apple
AAPL
$4.81T
| $48.6M | 0.09% |
764,820
-325,496
| -30% | -$23.9M |
|
121
PUT
Verizon
VZ
$183B
| $48.1M | 0.08% |
8,947
+5,832
| +187% | +$334K |
|
122
PUT
Cigna
CI
$76.8B
| $47.2M | 0.08% |
+2,666
| New | +$517K |
|
|
LK
123
PUT
DELISTED
Luckin Coffee Inc. American Depositary Shares
LK
| $47.2M | 0.08% |
17,361
+11,994
| +223% | +$442K |
|
124
PUT
Zoom
ZM
$26.3B
| $47.2M | 0.08% |
3,230
+2,607
| +418% | +$257K |
|
125
CALL
IBM
IBM
$198B
| $47M | 0.08% |
4,431
+1,815
| +69% | +$230K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.