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 | |
|---|---|---|---|---|---|---|
|
FCAC
8476
CALL
DELISTED
Falcon Capital Acquisition Corp. Class A Common Stock
FCAC
| $23K | ﹤0.01% |
250,100
+247,185
| +8,480% | +$2.46M |
|
|
AAT
8477
CALL
American Assets Trust
AAT
$1.5B
| $22K | ﹤0.01% |
600
+587
| +4,515% | +$20.9K |
|
8478
CALL
Arcos Dorados Holdings
ARCO
$1.74B
| $22K | ﹤0.01% |
3,854
+3,746
| +3,469% | +$22K |
|
8479
CALL
Biomerica
BMRA
$5.1M
| $22K | ﹤0.01% |
688
+684
| +17,100% | +$23.2K |
|
8480
CALL
Popular Inc
BPOP
$11B
| $22K | ﹤0.01% |
300
+283
| +1,665% | +$21.7K |
|
|
BRY
8481
CALL
DELISTED
Berry Corp
BRY
| $22K | ﹤0.01% |
3,400
+3,386
| +24,186% | +$21.4K |
|
8482
CALL
Santander
BSBR
$40.8B
| $22K | ﹤0.01% |
2,923
+2,907
| +18,169% | +$21.6K |
|
8483
PUT
Consolidated Water Co
CWCO
$471M
| $22K | ﹤0.01% |
1,900
+1,899
| +189,900% | +$23.5K |
|
8484
DigitalBridge
DBRG
$2.94B
| $22K | ﹤0.01% |
+697
| New | +$19.9K |
|
8485
PUT
FirstCash
FCFS
$8.89B
| $22K | ﹤0.01% |
300
+295
| +5,900% | +$22.3K |
|
8486
CALL
First Hawaiian
FHB
$3.4B
| $22K | ﹤0.01% |
+800
| New | +$22.4K |
|
8487
PUT
Gildan
GIL
$9.34B
| $22K | ﹤0.01% |
600
+574
| +2,208% | +$20.1K |
|
8488
AdvisorShares Ranger Equity Bear ETF
HDGE
$60.8M
| $22K | ﹤0.01% |
980
-1,041
| -52% | -$25.1K |
|
8489
CALL
Helen of Troy
HELE
$654M
| $22K | ﹤0.01% |
+100
| New | +$22K |
|
8490
PUT
Hancock Whitney
HWC
$6.12B
| $22K | ﹤0.01% |
500
+491
| +5,456% | +$22.8K |
|
8491
Insteel Industries
IIIN
$626M
| $22K | ﹤0.01% |
+703
| New | +$24.3K |
|
8492
Kirby Corp
KEX
$7.69B
| $22K | ﹤0.01% |
369
-2,685
| -88% | -$173K |
|
8493
PUT
Kemper
KMPR
$1.75B
| $22K | ﹤0.01% |
+300
| New | +$23.1K |
|
|
OCFT
8494
PUT
DELISTED
OneConnect Financial Technology
OCFT
| $22K | ﹤0.01% |
+190
| New | +$27.2K |
|
|
OLP
8495
CALL
One Liberty Properties
OLP
$550M
| $22K | ﹤0.01% |
800
+742
| +1,279% | +$19.2K |
|
8496
PUT
Ooma
OOMA
$569M
| $22K | ﹤0.01% |
1,200
+1,194
| +19,900% | +$21.6K |
|
8497
CALL
Palomar
PLMR
$3.68B
| $22K | ﹤0.01% |
300
+293
| +4,186% | +$21.1K |
|
8498
PUT
Precipio
PRPO
$41.6M
| $22K | ﹤0.01% |
+310
| New | +$20.3K |
|
8499
PUT
Rexford Industrial Realty
REXR
$8.61B
| $22K | ﹤0.01% |
400
+398
| +19,900% | +$22.1K |
|
8500
E.W. Scripps
SSP
$280M
| $22K | ﹤0.01% |
+1,116
| New | +$23.4K |
|
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.