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 | |
|---|---|---|---|---|---|---|
|
CYBR
1651
PUT
DELISTED
CyberArk
CYBR
| $3.06M | ﹤0.01% |
23,500
+23,381
| +19,648% | +$3.12M |
|
1652
PUT
VF Corp
VFC
$6.68B
| $3.06M | ﹤0.01% |
37,300
+36,548
| +4,860% | +$3.05M |
|
1653
Microvision
MVIS
$88.2M
| $3.06M | ﹤0.01% |
182,678
-25,883
| -12% | -$425K |
|
1654
PUT
Haemonetics
HAE
$3.58B
| $3.06M | ﹤0.01% |
45,900
+45,526
| +12,173% | +$3.22M |
|
1655
PUT
UWM Holdings
UWMC
$621M
| $3.05M | ﹤0.01% |
360,700
+358,057
| +13,547% | +$3M |
|
1656
Opendoor
OPEN
$3.7B
| $3.04M | ﹤0.01% |
177,387
+170,305
| +2,405% | +$2.93M |
|
1657
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$1.35B
| $3.04M | ﹤0.01% |
75,041
+43,693
| +139% | +$1.74M |
|
1658
CALL
Element Solutions
ESI
$9.12B
| $3.04M | ﹤0.01% |
+130,000
| New | +$2.86M |
|
1659
CALL
PG&E
PCG
$47.8B
| $3.04M | ﹤0.01% |
298,700
+295,167
| +8,355% | +$3.17M |
|
1660
Sherwin-Williams
SHW
$78.3B
| $3.03M | ﹤0.01% |
11,138
-7,204
| -39% | -$1.97M |
|
1661
New Oriental
EDU
$7.84B
| $3.03M | ﹤0.01% |
37,035
+34,103
| +1,163% | +$4.14M |
|
|
WCN
1662
CALL
Waste Connections
WCN
$42.8B
| $3.03M | ﹤0.01% |
25,400
+25,395
| +507,900% | +$3.02M |
|
1663
PUT
Copart
CPRT
$25.9B
| $3.03M | ﹤0.01% |
92,000
+90,528
| +6,150% | +$2.81M |
|
1664
CALL
Dolby
DLB
$4.72B
| $3.03M | ﹤0.01% |
30,800
+30,385
| +7,322% | +$3M |
|
1665
CALL
Evercore
EVR
$13.1B
| $3.03M | ﹤0.01% |
21,500
+21,495
| +429,900% | +$3M |
|
1666
CALL
HP
HPQ
$23.5B
| $3.02M | ﹤0.01% |
+100,200
| New | +$3.2M |
|
1667
CALL
Tapestry
TPR
$28.8B
| $3.02M | ﹤0.01% |
+69,500
| New | +$3.1M |
|
1668
Warner Bros
WBD
$64.6B
| $3.02M | ﹤0.01% |
98,387
-34,932
| -26% | -$1.21M |
|
1669
Parker-Hannifin
PH
$125B
| $3.02M | ﹤0.01% |
+9,820
| New | +$3.04M |
|
1670
PUT
United Natural Foods
UNFI
$3.01B
| $3.01M | ﹤0.01% |
+81,500
| New | +$2.96M |
|
1671
PUT
Moody's
MCO
$81.7B
| $3.01M | ﹤0.01% |
8,300
+8,252
| +17,192% | +$2.75M |
|
1672
CALL
Corteva
CTVA
$59.7B
| $3.01M | ﹤0.01% |
67,800
+67,189
| +10,997% | +$3.1M |
|
1673
PUT
SAP
SAP
$187B
| $3M | ﹤0.01% |
21,400
+21,180
| +9,627% | +$2.95M |
|
1674
Capri Holdings
CPRI
$1.77B
| $3M | ﹤0.01% |
52,539
+13,667
| +35% | +$743K |
|
1675
PUT
Paysafe
PSFE
$407M
| $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 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.