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 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.6M |
| 2 |
Shopify
SHOP
|
+$39.6M |
| 3 |
iShares China Large-Cap ETF
FXI
|
+$35.4M |
| 4 |
Verizon
VZ
|
+$34.1M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$34.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
AMC Entertainment Holdings
AMC
|
+$49.5M |
| 2 |
GE Aerospace
GE
|
+$35.2M |
| 3 |
Carnival Corporation Ltd
CCL
|
+$30.5M |
| 4 |
Advanced Micro Devices
AMD
|
+$28.8M |
| 5 |
Micron Technology
MU
|
+$23.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.61% |
| 2 | Consumer Discretionary | 0.43% |
| 3 | Healthcare | 0.35% |
| 4 | Communication Services | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
GP
6451
CALL
GreenPower Motor Co
GP
$10.8M
| $88K | ﹤0.01% |
930
-140
| -13% | -$18.1K |
|
6452
PUT
HNI Corp
HNI
$3.43B
| $88K | ﹤0.01% |
+2,100
| New | +$84.1K |
|
6453
PUT
PureCycle Technologies
PCT
$1.41B
| $88K | ﹤0.01% |
9,200
-22,500
| -71% | -$271K |
|
6454
PUT
Semtech
SMTC
$11.1B
| $88K | ﹤0.01% |
1,000
-8,400
| -89% | -$715K |
|
6455
PUT
Tiptree Inc
TIPT
$658M
| $88K | ﹤0.01% |
6,400
-56,200
| -90% | -$787K |
|
|
LOV
6456
PUT
DELISTED
Spark Networks SE American Depositary Shares
LOV
| $88K | ﹤0.01% |
28,100
-56,900
| -67% | -$168K |
|
6457
CALL
AquaBounty Technologies
AQB
$4.73M
| $87K | ﹤0.01% |
2,090
-3,250
| -61% | -$209K |
|
6458
PUT
Accuray
ARAY
$32.2M
| $87K | ﹤0.01% |
18,400
+6,300
| +52% | +$30.4K |
|
|
DEA
6459
CALL
Easterly Government Properties
DEA
$1.17B
| $87K | ﹤0.01% |
1,520
-720
| -32% | -$38.9K |
|
6460
PUT
Hilltop Holdings
HTH
$2.28B
| $87K | ﹤0.01% |
2,500
-12,700
| -84% | -$447K |
|
|
PLG
6461
Platinum Group Metals
PLG
$165M
| $87K | ﹤0.01% |
55,245
+52,524
| +1,930% | +$120K |
|
6462
PUT
Regis Corp
RGS
$68.7M
| $87K | ﹤0.01% |
2,505
+1,145
| +84% | +$62.2K |
|
6463
CALL
Simply Good Foods
SMPL
$1B
| $87K | ﹤0.01% |
2,100
+200
| +11% | +$7.63K |
|
|
ENZ
6464
PUT
DELISTED
Enzo Biochem, Inc.
ENZ
| $87K | ﹤0.01% |
27,300
-132,300
| -83% | -$451K |
|
|
AVYA
6465
CALL
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
| $87K | ﹤0.01% |
4,400
-9,700
| -69% | -$191K |
|
|
BNFT
6466
DELISTED
Benefitfocus, Inc.
BNFT
| $87K | ﹤0.01% |
8,215
-29,434
| -78% | -$316K |
|
|
CEI
6467
DELISTED
Camber Energy, Inc
CEI
| $87K | ﹤0.01% |
+2,050
| New | +$132K |
|
6468
CALL
Avery Dennison
AVY
$13.2B
| $86K | ﹤0.01% |
400
+200
| +100% | +$42.8K |
|
6469
Brookfield Renewable
BEPC
$6.34B
| $86K | ﹤0.01% |
2,356
-3,984
| -63% | -$152K |
|
6470
Blink Charging
BLNK
$80.5M
| $86K | ﹤0.01% |
3,269
-13,478
| -80% | -$434K |
|
6471
PUT
Traeger
COOK
$186M
| $86K | ﹤0.01% |
+142
| New | +$119K |
|
6472
PUT
EverQuote
EVER
$852M
| $86K | ﹤0.01% |
5,500
-6,000
| -52% | -$91.5K |
|
6473
CALL
East-West Bancorp
EWBC
$18.1B
| $86K | ﹤0.01% |
1,100
-4,400
| -80% | -$354K |
|
6474
El Pollo Loco
LOCO
$504M
| $86K | ﹤0.01% |
+6,117
| New | +$89.5K |
|
6475
PUT
NETSCOUT
NTCT
$2.98B
| $86K | ﹤0.01% |
2,600
+100
| +4% | +$3.03K |
|
Similar funds
Simplex Trading's Q4 2021 Portfolio in Review
As of Q4 2021, Simplex Trading held 12,077 positions worth $99B, down 7.5% from $107B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading withdrew a net $10.8B in Q4 2021, closing 1,645 positions and reducing 4,258 holdings. Its most notable exit was Carnival Corporation Ltd, an estimated $30.5M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.61% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in iShares China Large-Cap ETF worth $33M.
- Simplex Trading's largest Q4 2021 buy was iShares China Large-Cap ETF: 902,666 shares worth $33M.
- Simplex Trading added most to State Street Financial Select Sector SPDR ETF in Q4 2021, an estimated $42.6M increase.
- Simplex Trading's biggest Q4 2021 reduction was AMC Entertainment Holdings, cutting an estimated $49.5M.
- Simplex Trading fully exited Carnival Corporation Ltd in Q4 2021, selling an estimated $30.5M.
- Simplex Trading's ten largest holdings make up 33% of its $99B portfolio in Q4 2021.
- Simplex Trading opened 2,269 new positions and closed 1,645 in Q4 2021.
- Simplex Trading's portfolio value fell 7.5% quarter-over-quarter to $99B.
Based on Simplex Trading's 13F filing for Q4 2021, filed 4 Feb 2022.