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 | |
|---|---|---|---|---|---|---|
1151
PUT
DaVita
DVA
$15.2B
| $5.21M | 0.01% |
43,300
+43,103
| +21,880% | +$5.1M |
|
1152
PUT
Intercontinental Exchange
ICE
$81.6B
| $5.21M | 0.01% |
43,900
+43,706
| +22,529% | +$5.03M |
|
1153
CALL
C.H. Robinson
CHRW
$22.7B
| $5.2M | 0.01% |
55,500
+54,927
| +9,586% | +$5.35M |
|
1154
PUT
Colgate-Palmolive
CL
$72.3B
| $5.2M | 0.01% |
63,900
+62,642
| +4,979% | +$5.12M |
|
1155
CALL
Intuit
INTU
$80B
| $5.2M | 0.01% |
10,600
+10,182
| +2,436% | +$4.41M |
|
1156
PUT
Chegg
CHGG
$113M
| $5.19M | 0.01% |
62,500
+61,772
| +8,485% | +$5.12M |
|
1157
PUT
Edison International
EIX
$30.7B
| $5.19M | 0.01% |
89,800
+89,373
| +20,930% | +$5.2M |
|
1158
PUT
Southern Company
SO
$110B
| $5.19M | 0.01% |
85,800
+85,382
| +20,426% | +$5.46M |
|
1159
ASML
ASML
$682B
| $5.19M | 0.01% |
7,509
-2,104
| -22% | -$1.39M |
|
1160
CALL
Conagra Brands
CAG
$7.03B
| $5.18M | 0.01% |
142,500
+141,129
| +10,294% | +$5.28M |
|
1161
PUT
Ventas
VTR
$48.6B
| $5.18M | 0.01% |
90,800
+90,081
| +12,529% | +$5.03M |
|
1162
CALL
Invesco Mortgage Capital
IVR
$777M
| $5.18M | 0.01% |
132,830
+132,426
| +32,779% | +$5.02M |
|
|
FTCH
1163
CALL
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $5.18M | 0.01% |
102,800
+101,731
| +9,516% | +$4.83M |
|
1164
CALL
Cerence
CRNC
$392M
| $5.15M | 0.01% |
48,300
+48,003
| +16,163% | +$4.72M |
|
|
WORK
1165
DELISTED
Slack Technologies, Inc.
WORK
| $5.15M | 0.01% |
116,357
-51,602
| -31% | -$2.21M |
|
1166
GameStop
GME
$9.58B
| $5.15M | 0.01% |
96,224
+94,824
| +6,773% | +$4.6M |
|
|
TBHC
1167
PUT
DELISTED
The Brand House Collective
TBHC
| $5.14M | 0.01% |
224,900
+222,688
| +10,067% | +$5.98M |
|
|
GOOS
1168
PUT
Canada Goose Holdings
GOOS
$870M
| $5.14M | 0.01% |
117,600
+116,184
| +8,205% | +$4.74M |
|
1169
CALL
Canadian Imperial Bank of Commerce
CM
$107B
| $5.13M | 0.01% |
90,200
+89,378
| +10,873% | +$4.9M |
|
1170
PUT
Royal Bank of Canada
RY
$291B
| $5.13M | 0.01% |
50,600
+50,044
| +9,001% | +$4.96M |
|
1171
Global X Lithium & Battery Tech ETF
LIT
$1.5B
| $5.12M | ﹤0.01% |
70,706
+59,720
| +544% | +$3.84M |
|
|
IAA
1172
CALL
DELISTED
IAA, Inc. Common Stock
IAA
| $5.12M | ﹤0.01% |
93,900
+93,563
| +27,764% | +$5.37M |
|
1173
CALL
CF Industries
CF
$19.1B
| $5.12M | ﹤0.01% |
99,500
+98,963
| +18,429% | +$5.03M |
|
|
GAP
1174
The Gap Inc
GAP
$6.89B
| $5.12M | ﹤0.01% |
152,137
+1,707
| +1% | +$56.4K |
|
1175
PUT
Huazhu Hotels Group
HTHT
$12.5B
| $5.12M | ﹤0.01% |
96,900
+96,510
| +24,746% | +$5.45M |
|
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.