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 | |
|---|---|---|---|---|---|---|
|
TVTY
3576
CALL
DELISTED
Tivity Health, Inc. Common Stock
TVTY
| $734K | ﹤0.01% |
27,900
+27,590
| +8,900% | +$693K |
|
3577
CALL
Kontoor Brands
KTB
$4.79B
| $733K | ﹤0.01% |
13,000
+12,980
| +64,900% | +$796K |
|
3578
PUT
Outdoor Holding Co
POWW
$247M
| $733K | ﹤0.01% |
74,900
+73,247
| +4,431% | +$521K |
|
3579
PUT
Perrigo
PRGO
$1.42B
| $733K | ﹤0.01% |
16,000
+15,614
| +4,045% | +$692K |
|
3580
CALL
Navios Maritime Partners
NMM
$2.21B
| $732K | ﹤0.01% |
24,800
+23,709
| +2,173% | +$687K |
|
3581
PUT
Western Midstream Partners
WES
$19.7B
| $732K | ﹤0.01% |
34,200
+33,931
| +12,614% | +$703K |
|
3582
Amplify Blockchain Technology ETF
BLOK
$1.05B
| $731K | ﹤0.01% |
15,347
-6,451
| -30% | -$316K |
|
3583
CALL
Commercial Metals
CMC
$7.8B
| $731K | ﹤0.01% |
23,800
+23,523
| +8,492% | +$729K |
|
3584
PUT
Xcel Energy
XEL
$51.5B
| $731K | ﹤0.01% |
11,100
+11,043
| +19,374% | +$769K |
|
3585
CALL
Methanex
MEOH
$4.22B
| $730K | ﹤0.01% |
22,100
+21,819
| +7,765% | +$802K |
|
3586
CALL
Mercury Systems
MRCY
$5.9B
| $729K | ﹤0.01% |
11,000
+10,969
| +35,384% | +$758K |
|
|
SCS
3587
CALL
DELISTED
Steelcase
SCS
| $729K | ﹤0.01% |
48,300
+48,023
| +17,337% | +$692K |
|
3588
Check Point Software Technologies
CHKP
$13.8B
| $728K | ﹤0.01% |
+6,270
| New | +$740K |
|
|
FOLD
3589
PUT
DELISTED
Amicus Therapeutics
FOLD
| $728K | ﹤0.01% |
75,600
+73,173
| +3,015% | +$714K |
|
3590
Smith & Wesson
SWBI
$666M
| $728K | ﹤0.01% |
+20,988
| New | +$439K |
|
|
GOL
3591
CALL
DELISTED
Gol Linhas Aéreas Inteligentes S.A. American Depositary Shares (Each representing Ten Preferred Shares)
GOL
| $728K | ﹤0.01% |
79,000
+78,435
| +13,882% | +$732K |
|
|
LOTZ
3592
PUT
DELISTED
CarLotz, Inc. Class A Common Stock
LOTZ
| $728K | ﹤0.01% |
+133,400
| New | +$841K |
|
|
EBIX
3593
PUT
DELISTED
Ebix Inc
EBIX
| $728K | ﹤0.01% |
21,500
+21,282
| +9,762% | +$659K |
|
3594
CALL
MBIA
MBI
$283M
| $726K | ﹤0.01% |
+66,000
| New | +$658K |
|
3595
PUT
Cintas
CTAS
$87.3B
| $725K | ﹤0.01% |
7,600
+7,556
| +17,173% | +$670K |
|
3596
CALL
KT
KT
$8.99B
| $725K | ﹤0.01% |
52,000
+50,065
| +2,587% | +$685K |
|
3597
PUT
Omega Healthcare
OHI
$15.4B
| $725K | ﹤0.01% |
20,000
+19,882
| +16,849% | +$738K |
|
|
CZOO
3598
PUT
DELISTED
Cazoo Group Ltd
CZOO
| $725K | ﹤0.01% |
36
+35
| +3,500% | +$699K |
|
3599
CALL
Peabody Energy
BTU
$2.76B
| $724K | ﹤0.01% |
91,300
+90,530
| +11,757% | +$536K |
|
3600
CALL
Manhattan Associates
MANH
$9.9B
| $724K | ﹤0.01% |
+5,000
| New | +$666K |
|
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.