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 |
AMC Entertainment Holdings
AMC
|
+$39.3M |
| 2 |
AT&T
T
|
+$29.8M |
| 3 |
NVIDIA
NVDA
|
+$28.3M |
| 4 |
Micron Technology
MU
|
+$22.9M |
| 5 |
Baidu
BIDU
|
+$22.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$36.1M |
| 2 |
Tesla
TSLA
|
+$35.2M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.9M |
| 4 |
Palantir
PLTR
|
+$25.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.47% |
| 2 | Consumer Discretionary | 0.39% |
| 3 | Communication Services | 0.27% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.25% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
176
PUT
Pinduoduo
PDD
$119B
| $80.7M | 0.08% |
635,000
+631,028
| +15,887% | +$82M |
|
177
PUT
Texas Instruments
TXN
$268B
| $79.8M | 0.08% |
415,100
+412,731
| +17,422% | +$77.4M |
|
178
CALL
Chevron
CVX
$384B
| $79.6M | 0.08% |
759,600
+752,534
| +10,650% | +$79.4M |
|
179
CALL
Cisco
CSCO
$443B
| $79.2M | 0.08% |
1,494,100
+1,481,234
| +11,513% | +$77.9M |
|
180
CALL
Beyond Meat
BYND
$312M
| $78.3M | 0.08% |
497,200
+492,863
| +11,364% | +$65.5M |
|
181
CALL
iShares Morningstar Value ETF
ILCV
$1.3B
| $78.1M | 0.08% |
1,047,100
+1,008,114
| +2,586% | +$64.6M |
|
182
PUT
Procter & Gamble
PG
$347B
| $77.7M | 0.08% |
+575,600
| New | +$77.9M |
|
|
DOCU
183
CALL
DocuSign
DOCU
$9.11B
| $77.2M | 0.07% |
276,100
+274,329
| +15,490% | +$61.3M |
|
184
PUT
Verizon
VZ
$185B
| $77M | 0.07% |
1,374,000
+1,366,224
| +17,570% | +$78.4M |
|
185
PUT
United States Oil Fund
USO
$2.37B
| $76.8M | 0.07% |
+1,539,600
| New | +$69.5M |
|
186
CALL
IBM
IBM
$193B
| $75.4M | 0.07% |
+537,853
| New | +$73.5M |
|
187
CALL
ServiceNow
NOW
$98.6B
| $75.1M | 0.07% |
683,500
+679,900
| +18,886% | +$68.9M |
|
188
CALL
Applied Materials
AMAT
$443B
| $75M | 0.07% |
526,700
+519,817
| +7,552% | +$69.7M |
|
189
PUT
Carnival Corporation Ltd
CCL
$35.7B
| $74.6M | 0.07% |
+2,829,300
| New | +$79.2M |
|
190
CALL
Pinterest
PINS
$12.5B
| $74.3M | 0.07% |
941,400
+932,204
| +10,137% | +$65M |
|
191
PUT
Sea Limited
SE
$64.2B
| $74.3M | 0.07% |
270,600
+266,285
| +6,171% | +$67.6M |
|
|
192
PUT
Chevron
CVX
$384B
| $73.8M | 0.07% |
704,700
+699,145
| +12,586% | +$73.8M |
|
193
PUT
United Airlines
UAL
$37.9B
| $71M | 0.07% |
1,358,700
+1,348,733
| +13,532% | +$74.8M |
|
|
194
PUT
ServiceNow
NOW
$98.6B
| $70.2M | 0.07% |
638,500
+630,425
| +7,807% | +$63.9M |
|
195
CALL
Ford
F
$57.3B
| $69.3M | 0.07% |
4,663,200
+4,649,944
| +35,078% | +$61.8M |
|
196
PUT
Snowflake
SNOW
$92.7B
| $69.2M | 0.07% |
286,000
+281,955
| +6,970% | +$65.6M |
|
|
197
CALL
Procter & Gamble
PG
$347B
| $68.3M | 0.07% |
+506,300
| New | +$68.5M |
|
198
PUT
Morgan Stanley
MS
$343B
| $67.8M | 0.07% |
739,198
+732,539
| +11,001% | +$62.8M |
|
199
CALL
VanEck Durable High Dividend ETF
DURA
$38.4M
| $67.7M | 0.07% |
349,900
+348,966
| +37,363% | +$10.8M |
|
200
PUT
McDonald's
MCD
$187B
| $67M | 0.06% |
+290,100
| New | +$67.5M |
|
Similar funds
Simplex Trading's Q2 2021 Portfolio in Review
As of Q2 2021, Simplex Trading held 11,184 positions worth $104B, up 86% from $55.7B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $97.5B of net new capital in Q2 2021, opening 2,250 new positions and adding to 6,673 existing holdings. Its largest new stake was AT&T: 1,311,180 shares worth $28.5M.
By sector, the portfolio is most concentrated in Technology at 0.47% of assets, down from 0.65% a quarter earlier, followed by Consumer Discretionary and Communication Services.
On the sell side, the largest reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, an estimated $25.9M trimmed.
- Simplex Trading's largest Q2 2021 buy was AT&T: 1,311,180 shares worth $28.5M.
- Simplex Trading added most to AMC Entertainment Holdings in Q2 2021, an estimated $39.3M increase.
- Simplex Trading's biggest Q2 2021 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $25.9M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2021, selling an estimated $36.1M.
- Simplex Trading's ten largest holdings make up 40% of its $104B portfolio in Q2 2021.
- Simplex Trading opened 2,250 new positions and closed 1,197 in Q2 2021.
- Simplex Trading's portfolio value rose 86% quarter-over-quarter to $104B.
Based on Simplex Trading's 13F filing for Q2 2021, filed 12 Aug 2021.