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 | |
|---|---|---|---|---|---|---|
|
APRN
3026
PUT
DELISTED
Blue Apron Holdings, Inc. Class A Common Stock
APRN
| $1.06M | ﹤0.01% |
20,617
+20,535
| +25,043% | +$1.31M |
|
3027
FIGS
FIGS
$1.65B
| $1.06M | ﹤0.01% |
+21,111
| New | +$790K |
|
3028
CALL
VICI Properties
VICI
$29.6B
| $1.06M | ﹤0.01% |
34,100
+34,025
| +45,367% | +$1.06M |
|
3029
CALL
Brighthouse Financial
BHF
$3.64B
| $1.06M | ﹤0.01% |
23,200
+23,011
| +12,175% | +$1.08M |
|
3030
Vanguard Small-Cap Growth ETF
VBK
$23.2B
| $1.06M | ﹤0.01% |
3,645
+3,567
| +4,573% | +$998K |
|
3031
CALL
Fair Isaac
FICO
$30B
| $1.05M | ﹤0.01% |
2,100
+2,031
| +2,943% | +$1.03M |
|
3032
CALL
Olin
OLN
$2.51B
| $1.05M | ﹤0.01% |
+22,800
| New | +$1.03M |
|
|
PDCO
3033
CALL
DELISTED
Patterson Companies, Inc.
PDCO
| $1.05M | ﹤0.01% |
34,700
+34,508
| +17,973% | +$1.16M |
|
3034
Five Below
FIVE
$11.4B
| $1.05M | ﹤0.01% |
5,453
-4,463
| -45% | -$852K |
|
3035
Frontline
FRO
$8.64B
| $1.05M | ﹤0.01% |
117,098
-27,561
| -19% | -$222K |
|
3036
PUT
Eldorado Gold
EGO
$8.43B
| $1.05M | ﹤0.01% |
105,800
+105,039
| +13,803% | +$1.17M |
|
3037
CALL
Ormat Technologies
ORA
$6.16B
| $1.05M | ﹤0.01% |
15,100
+15,005
| +15,795% | +$1.07M |
|
3038
PUT
Pinnacle West Capital
PNW
$12.7B
| $1.05M | ﹤0.01% |
12,800
+12,695
| +12,090% | +$1.07M |
|
3039
iShares MSCI Italy ETF
EWI
$996M
| $1.05M | ﹤0.01% |
32,371
+25,211
| +352% | +$825K |
|
3040
CALL
Trinity Industries
TRN
$2.92B
| $1.05M | ﹤0.01% |
39,000
+38,889
| +35,035% | +$1.1M |
|
|
PDCE
3041
CALL
DELISTED
PDC Energy, Inc.
PDCE
| $1.05M | ﹤0.01% |
+22,900
| New | +$935K |
|
3042
Fortinet
FTNT
$112B
| $1.05M | ﹤0.01% |
21,980
-39,170
| -64% | -$1.67M |
|
3043
Bath & Body Works
BBWI
$4.11B
| $1.05M | ﹤0.01% |
+17,964
| New | +$971K |
|
3044
PUT
Cirrus Logic
CRUS
$6.83B
| $1.05M | ﹤0.01% |
12,300
+12,123
| +6,849% | +$972K |
|
3045
PUT
Retractable Technologies
RVP
$20.4M
| $1.05M | ﹤0.01% |
90,500
+90,291
| +43,201% | +$950K |
|
|
AXNX
3046
CALL
DELISTED
Axonics, Inc. Common Stock
AXNX
| $1.05M | ﹤0.01% |
16,500
+16,440
| +27,400% | +$970K |
|
3047
CALL
Perrigo
PRGO
$1.43B
| $1.04M | ﹤0.01% |
22,800
+22,675
| +18,140% | +$1.01M |
|
|
MBT
3048
CALL
DELISTED
Mobile TeleSystems Public Joint Stock Company American Depositary Shares (Each representing 2 Shares
MBT
| $1.04M | ﹤0.01% |
112,900
+111,663
| +9,027% | +$992K |
|
3049
PUT
Starwood Property Trust
STWD
$6.14B
| $1.04M | ﹤0.01% |
39,900
+39,751
| +26,679% | +$1.01M |
|
3050
PUT
Huntington Bancshares
HBAN
$34.7B
| $1.04M | ﹤0.01% |
73,100
+72,700
| +18,175% | +$1.11M |
|
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.