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 | Miscellaneous | 97.7% |
| 2 | Technology | 0.48% |
| 3 | Consumer Discretionary | 0.39% |
| 4 | Communication Services | 0.28% |
| 5 | Healthcare | 0.27% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CYBR
1651
PUT
DELISTED
CyberArk
CYBR
| $3.06M | ﹤0.01% |
23,500
+23,381
| +19,648% | +$3.12M |
|
1652
PUT
VF Corp
VFC
$5.24B
| $3.06M | ﹤0.01% |
37,300
+36,548
| +4,860% | +$3.05M |
|
1653
Microvision
MVIS
$50.5M
| $3.06M | ﹤0.01% |
12,179
-1,725
| -12% | -$425K |
|
1654
PUT
Haemonetics
HAE
$4.66B
| $3.06M | ﹤0.01% |
45,900
+45,526
| +12,173% | +$3.22M |
|
1655
PUT
UWM Holdings
UWMC
$2.37B
| $3.05M | ﹤0.01% |
360,700
+358,057
| +13,547% | +$3M |
|
1656
Opendoor
OPEN
$3.03B
| $3.04M | ﹤0.01% |
177,387
+170,305
| +2,405% | +$2.93M |
|
1657
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$1.56B
| $3.04M | ﹤0.01% |
75,041
+43,693
| +139% | +$1.74M |
|
1658
CALL
Element Solutions
ESI
$8.93B
| $3.04M | ﹤0.01% |
+130,000
| New | +$2.86M |
|
1659
CALL
PG&E
PCG
$32.1B
| $3.04M | ﹤0.01% |
298,700
+295,167
| +8,355% | +$3.17M |
|
1660
Sherwin-Williams
SHW
$79.8B
| $3.03M | ﹤0.01% |
11,138
-7,204
| -39% | -$1.97M |
|
1661
New Oriental
EDU
$9.18B
| $3.03M | ﹤0.01% |
37,035
+34,103
| +1,163% | +$4.14M |
|
|
WCN
1662
CALL
Waste Connections
WCN
$40.9B
| $3.03M | ﹤0.01% |
25,400
+25,395
| +507,900% | +$3.02M |
|
1663
PUT
Copart
CPRT
$30.3B
| $3.03M | ﹤0.01% |
92,000
+90,528
| +6,150% | +$2.81M |
|
1664
CALL
Dolby
DLB
$5.76B
| $3.03M | ﹤0.01% |
30,800
+30,385
| +7,322% | +$3M |
|
1665
CALL
Evercore
EVR
$11.5B
| $3.03M | ﹤0.01% |
21,500
+21,495
| +429,900% | +$3M |
|
1666
CALL
HP
HPQ
$28.1B
| $3.02M | ﹤0.01% |
+100,200
| New | +$3.2M |
|
1667
CALL
Tapestry
TPR
$23.4B
| $3.02M | ﹤0.01% |
+69,500
| New | +$3.1M |
|
1668
Warner Bros
WBD
$70.8B
| $3.02M | ﹤0.01% |
98,387
-34,932
| -26% | -$1.21M |
|
1669
Parker-Hannifin
PH
$121B
| $3.02M | ﹤0.01% |
+9,820
| New | +$3.04M |
|
1670
PUT
United Natural Foods
UNFI
$2.74B
| $3.01M | ﹤0.01% |
+81,500
| New | +$2.96M |
|
1671
PUT
Moody's
MCO
$83.4B
| $3.01M | ﹤0.01% |
8,300
+8,252
| +17,192% | +$2.75M |
|
1672
CALL
Corteva
CTVA
$57.5B
| $3.01M | ﹤0.01% |
67,800
+67,189
| +10,997% | +$3.1M |
|
1673
PUT
SAP
SAP
$244B
| $3M | ﹤0.01% |
21,400
+21,180
| +9,627% | +$2.95M |
|
1674
Capri Holdings
CPRI
$1.5B
| $3M | ﹤0.01% |
52,539
+13,667
| +35% | +$743K |
|
1675
PUT
Paysafe
PSFE
$337M
| $3M | ﹤0.01% |
+20,642
| New | +$3.1M |
|
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's Q2 2021 filing shows 2,248 new, 6,668 increased, 1,000 reduced and 1,196 closed positions. Its largest new stake was AT&T: 1,311,180 shares worth $28.5M. The largest sale was Invesco QQQ Trust, an estimated $36.1M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 97% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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 2,248 new positions and closed 1,196 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.