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 | |
|---|---|---|---|---|---|---|
2376
PUT
BridgeBio Pharma
BBIO
$16.5B
| $1.48M | ﹤0.01% |
88,500
+86,800
| +5,106% | +$3.67M |
|
2377
PUT
Consolidated Edison
ED
$41.6B
| $1.48M | ﹤0.01% |
17,300
-11,500
| -40% | -$904K |
|
2378
CALL
Pan American Silver
PAAS
$18.6B
| $1.48M | ﹤0.01% |
59,100
-92,700
| -61% | -$2.33M |
|
2379
CALL
Paysafe
PSFE
$407M
| $1.48M | ﹤0.01% |
31,450
-44,417
| -59% | -$2.97M |
|
2380
CALL
Spectrum Brands
SPB
$2.04B
| $1.47M | ﹤0.01% |
14,500
-16,100
| -53% | -$1.58M |
|
|
HUT
2381
PUT
Hut 8
HUT
$12.4B
| $1.47M | ﹤0.01% |
37,540
+27,280
| +266% | +$1.53M |
|
|
VNE
2382
CALL
DELISTED
Veoneer, Inc.
VNE
| $1.47M | ﹤0.01% |
41,500
+17,100
| +70% | +$605K |
|
2383
Edison International
EIX
$30.7B
| $1.47M | ﹤0.01% |
21,536
-477
| -2% | -$30.2K |
|
2384
PUT
UWM Holdings
UWMC
$621M
| $1.47M | ﹤0.01% |
248,100
-119,500
| -33% | -$806K |
|
2385
ProShares Ultra Russell2000
UWM
$255M
| $1.47M | ﹤0.01% |
26,408
+22,529
| +581% | +$1.3M |
|
|
CALY
2386
PUT
Callaway Golf Company
CALY
$3.26B
| $1.47M | ﹤0.01% |
53,400
-62,500
| -54% | -$1.74M |
|
2387
PUT
GoPro
GPRO
$116M
| $1.46M | ﹤0.01% |
141,800
+90,900
| +179% | +$902K |
|
2388
CALL
Northern Oil and Gas
NOG
$2.3B
| $1.46M | ﹤0.01% |
71,000
+56,300
| +383% | +$1.26M |
|
|
MAXN
2389
PUT
DELISTED
Maxeon Solar Technologies
MAXN
| $1.46M | ﹤0.01% |
1,051
+1,025
| +3,942% | +$1.9M |
|
|
WCC
2390
CALL
WESCO International
WCC
$16.2B
| $1.46M | ﹤0.01% |
11,100
+8,600
| +344% | +$1.1M |
|
2391
CALL
Albertsons Companies
ACI
$5.4B
| $1.46M | ﹤0.01% |
48,300
+14,200
| +42% | +$450K |
|
2392
CALL
CleanSpark
CLSK
$3.73B
| $1.46M | ﹤0.01% |
153,100
+99,000
| +183% | +$1.58M |
|
2393
Gray Television
GTN
$407M
| $1.46M | ﹤0.01% |
+72,286
| New | +$1.6M |
|
2394
CALL
Tapestry
TPR
$28.8B
| $1.46M | ﹤0.01% |
35,900
-33,900
| -49% | -$1.39M |
|
|
LNW
2395
PUT
DELISTED
Light & Wonder
LNW
| $1.46M | ﹤0.01% |
21,800
+13,100
| +151% | +$953K |
|
2396
CALL
ADT
ADT
$5.16B
| $1.45M | ﹤0.01% |
172,800
+60,600
| +54% | +$517K |
|
2397
Dominion Energy
D
$62.5B
| $1.45M | ﹤0.01% |
+18,431
| New | +$1.39M |
|
2398
CALL
Brookfield
BN
$102B
| $1.45M | ﹤0.01% |
76,076
+10,391
| +16% | +$329K |
|
2399
CALL
Dillards
DDS
$8.87B
| $1.45M | ﹤0.01% |
5,900
-14,000
| -70% | -$3.68M |
|
2400
PUT
Teleflex
TFX
$5.85B
| $1.45M | ﹤0.01% |
4,400
-21,600
| -83% | -$7.35M |
|
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.