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 | |
|---|---|---|---|---|---|---|
51
CALL
Citigroup
C
$223B
| $257M | 0.26% |
4,251,900
+1,910,400
| +82% | +$127M |
|
52
PUT
VanEck Gold Miners ETF
GDX
$22.7B
| $255M | 0.26% |
3,785,200
-15,300
| -0.4% | -$488K |
|
53
PUT
Walt Disney
DIS
$167B
| $254M | 0.26% |
1,639,000
+180,200
| +12% | +$29.1M |
|
|
UWC
54
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $254M | 0.26% |
1,560,800
+322,300
| +26% | +$52.4M |
|
55
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $252M | 0.25% |
694,200
-254,500
| -27% | -$90.4M |
|
56
PUT
Broadcom
AVGO
$1.84T
| $246M | 0.25% |
3,700,000
+706,000
| +24% | +$39.7M |
|
57
CALL
Salesforce
CRM
$139B
| $246M | 0.25% |
968,800
-353,000
| -27% | -$99.2M |
|
58
CALL
JPMorgan Chase
JPM
$918B
| $236M | 0.24% |
1,492,600
+259,900
| +21% | +$42.7M |
|
59
CALL
Visa
V
$677B
| $234M | 0.24% |
1,080,400
+202,000
| +23% | +$43.4M |
|
60
PUT
Home Depot
HD
$331B
| $229M | 0.23% |
552,400
+335,400
| +155% | +$128M |
|
61
CALL
Moderna
MRNA
$23.7B
| $227M | 0.23% |
892,300
+459,900
| +106% | +$134M |
|
62
CALL
Walmart Inc
WMT
$878B
| $224M | 0.23% |
4,653,600
+878,100
| +23% | +$41.9M |
|
|
63
PUT
Shopify
SHOP
$160B
| $222M | 0.22% |
1,611,000
+166,000
| +11% | +$24.3M |
|
64
PUT
Bank of America
BAC
$430B
| $213M | 0.22% |
4,789,500
+962,600
| +25% | +$43.9M |
|
65
CALL
Costco
COST
$412B
| $211M | 0.21% |
371,600
+14,400
| +4% | +$7.38M |
|
66
CALL
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $209M | 0.21% |
2,393,900
+1,074,800
| +81% | +$179M |
|
|
67
CALL
Micron Technology
MU
$1.1T
| $208M | 0.21% |
2,228,600
-873,400
| -28% | -$68.2M |
|
|
68
PUT
Citigroup
C
$223B
| $202M | 0.2% |
3,348,400
+409,300
| +14% | +$27.2M |
|
69
PUT
Berkshire Hathaway Class B
BRK.B
$1.06T
| $198M | 0.2% |
662,100
+265,700
| +67% | +$76.1M |
|
70
PUT
TSMC
TSM
$2.2T
| $197M | 0.2% |
1,636,100
+561,100
| +52% | +$65.7M |
|
|
71
PUT
Visa
V
$677B
| $197M | 0.2% |
907,100
+148,600
| +20% | +$31.9M |
|
72
PUT
Pfizer
PFE
$142B
| $196M | 0.2% |
3,742,800
+118,700
| +3% | +$5.88M |
|
73
CALL
Chipotle Mexican Grill
CMG
$42.7B
| $196M | 0.2% |
5,595,000
+4,065,000
| +266% | +$143M |
|
74
PUT
Goldman Sachs
GS
$320B
| $194M | 0.2% |
508,300
+72,900
| +17% | +$28.9M |
|
75
CALL
Intel
INTC
$530B
| $193M | 0.19% |
3,737,900
+46,900
| +1% | +$2.4M |
|
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.