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 | |
|---|---|---|---|---|---|---|
126
CALL
General Motors
GM
$71.7B
| $118M | 0.12% |
2,020,700
+511,400
| +34% | +$29.9M |
|
127
PUT
Baidu
BIDU
$36.8B
| $118M | 0.12% |
794,400
-415,000
| -34% | -$64.8M |
|
128
CALL
Roku
ROKU
$21.4B
| $118M | 0.12% |
515,200
+68,800
| +15% | +$18.6M |
|
129
CALL
Home Depot
HD
$332B
| $117M | 0.12% |
281,500
+100
| +0% | +$38.1K |
|
130
PUT
Zoom
ZM
$26.3B
| $116M | 0.12% |
633,300
+159,300
| +34% | +$37.5M |
|
131
PUT
Lowe's Companies
LOW
$115B
| $114M | 0.11% |
440,400
-73,500
| -14% | -$17.5M |
|
132
PUT
Snap
SNAP
$7.67B
| $113M | 0.11% |
2,406,200
-1,117,900
| -32% | -$62.9M |
|
|
133
PUT
Roku
ROKU
$21.4B
| $112M | 0.11% |
489,600
+26,400
| +6% | +$7.12M |
|
|
134
PUT
AMC Entertainment Holdings
AMC
$1.96B
| $111M | 0.11% |
406,280
-1,042,890
| -72% | -$367M |
|
135
CALL
TSMC
TSM
$2.2T
| $110M | 0.11% |
911,900
+136,400
| +18% | +$16M |
|
136
PUT
Palantir
PLTR
$318B
| $105M | 0.11% |
5,793,500
+2,597,000
| +81% | +$57.4M |
|
137
CALL
Target
TGT
$63.4B
| $105M | 0.11% |
455,400
-62,000
| -12% | -$15.1M |
|
138
PUT
Coca-Cola
KO
$353B
| $104M | 0.11% |
1,759,400
+983,400
| +127% | +$54.8M |
|
139
PUT
Sea Limited
SE
$65.1B
| $104M | 0.1% |
464,100
+194,400
| +72% | +$58M |
|
140
CALL
Johnson & Johnson
JNJ
$599B
| $103M | 0.1% |
603,200
+54,500
| +10% | +$8.92M |
|
141
CALL
Procter & Gamble
PG
$345B
| $103M | 0.1% |
630,200
+120,500
| +24% | +$17.9M |
|
142
CALL
Vanguard S&P 500 ETF
VOO
$981B
| $103M | 0.1% |
316,600
+135,700
| +75% | +$57.3M |
|
143
PUT
Oracle
ORCL
$366B
| $102M | 0.1% |
1,170,300
+335,400
| +40% | +$31.5M |
|
|
144
CALL
Shopify
SHOP
$160B
| $102M | 0.1% |
740,000
-556,000
| -43% | -$81.2M |
|
145
PUT
Uber
UBER
$146B
| $101M | 0.1% |
2,397,500
-177,500
| -7% | -$7.65M |
|
146
PUT
Wells Fargo
WFC
$266B
| $99M | 0.1% |
2,062,500
-452,200
| -18% | -$22.3M |
|
|
147
CALL
Snap
SNAP
$7.67B
| $98.9M | 0.1% |
2,102,900
+740,000
| +54% | +$41.6M |
|
|
148
CALL
Wells Fargo
WFC
$266B
| $98.8M | 0.1% |
2,059,300
-715,000
| -26% | -$35.2M |
|
149
CALL
United Airlines
UAL
$38.2B
| $98.7M | 0.1% |
2,254,300
+388,300
| +21% | +$18M |
|
150
CALL
Broadcom
AVGO
$1.84T
| $98.5M | 0.1% |
1,480,000
+735,000
| +99% | +$41.3M |
|
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.