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 | |
|---|---|---|---|---|---|---|
3026
PUT
Banco Macro
BMA
$5.89B
| $888K | ﹤0.01% |
63,400
-30,500
| -32% | -$477K |
|
3027
CALL
Essent Group
ESNT
$6.12B
| $887K | ﹤0.01% |
19,500
+4,100
| +27% | +$188K |
|
|
ESSC
3028
CALL
DELISTED
East Stone Acquisition Corporation Ordinary Shares
ESSC
| $887K | ﹤0.01% |
75,100
+64,800
| +629% | +$706K |
|
3029
PUT
Intellia Therapeutics
NTLA
$1.49B
| $886K | ﹤0.01% |
7,500
-67,700
| -90% | -$8.48M |
|
3030
PUT
Newell Brands
NWL
$2.2B
| $886K | ﹤0.01% |
40,600
+4,000
| +11% | +$90.4K |
|
3031
PUT
Vericel Corp
VCEL
$2.31B
| $884K | ﹤0.01% |
22,500
+17,800
| +379% | +$780K |
|
3032
CALL
Hims & Hers Health
HIMS
$7B
| $882K | ﹤0.01% |
134,800
+5,200
| +4% | +$37.6K |
|
|
MAG
3033
PUT
DELISTED
MAG Silver
MAG
| $882K | ﹤0.01% |
56,300
-26,100
| -32% | -$457K |
|
3034
CALL
J.M. Smucker
SJM
$12.9B
| $882K | ﹤0.01% |
6,500
+1,200
| +23% | +$153K |
|
3035
PUT
Artisan Partners
APAM
$2.86B
| $881K | ﹤0.01% |
18,500
-5,400
| -23% | -$259K |
|
3036
CALL
Scotiabank
BNS
$106B
| $881K | ﹤0.01% |
12,300
-47,200
| -79% | -$3.12M |
|
3037
Kinder Morgan
KMI
$70.6B
| $881K | ﹤0.01% |
55,597
+7,195
| +15% | +$120K |
|
3038
Pegasystems
PEGA
$4.7B
| $881K | ﹤0.01% |
15,762
+11,958
| +314% | +$708K |
|
|
ENDP
3039
PUT
DELISTED
Endo International plc
ENDP
| $880K | ﹤0.01% |
234,200
+220,400
| +1,597% | +$1.07M |
|
3040
PUT
Atkore
ATKR
$2.54B
| $878K | ﹤0.01% |
7,900
+2,600
| +49% | +$264K |
|
3041
BWX Technologies
BWXT
$16.2B
| $878K | ﹤0.01% |
18,349
+15,380
| +518% | +$805K |
|
3042
Check Point Software Technologies
CHKP
$13.6B
| $877K | ﹤0.01% |
7,529
+659
| +10% | +$76.4K |
|
3043
PUT
Green Dot
GDOT
$746M
| $877K | ﹤0.01% |
24,200
-32,100
| -57% | -$1.31M |
|
3044
PUT
Itaú Unibanco
ITUB
$92.3B
| $877K | ﹤0.01% |
322,905
-53,799
| -14% | -$194K |
|
3045
CALL
SiTime
SITM
$15.7B
| $877K | ﹤0.01% |
+3,000
| New | +$786K |
|
|
3046
PUT
SiTime
SITM
$15.7B
| $877K | ﹤0.01% |
+3,000
| New | +$786K |
|
|
LICY
3047
PUT
DELISTED
Li-Cycle Holdings Corp.
LICY
| $875K | ﹤0.01% |
+10,988
| New | +$1.04M |
|
3048
PUT
Burlington
BURL
$22.5B
| $874K | ﹤0.01% |
3,000
-7,000
| -70% | -$1.97M |
|
|
CODX
3049
PUT
Co-Diagnostics
CODX
$7.52M
| $874K | ﹤0.01% |
3,263
-664
| -17% | -$174K |
|
3050
PUT
Mohawk Industries
MHK
$7.05B
| $874K | ﹤0.01% |
4,800
-4,100
| -46% | -$732K |
|
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.