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 | |
|---|---|---|---|---|---|---|
1676
PUT
Check Point Software Technologies
CHKP
$13.3B
| $2.89M | ﹤0.01% |
24,800
-29,200
| -54% | -$3.38M |
|
1677
Suncor Energy
SU
$77.7B
| $2.89M | ﹤0.01% |
115,428
+31,419
| +37% | +$765K |
|
1678
LiveRamp
RAMP
$2.29B
| $2.89M | ﹤0.01% |
60,224
+28,241
| +88% | +$1.42M |
|
1679
CALL
Oshkosh
OSK
$9.67B
| $2.88M | ﹤0.01% |
25,600
-24,900
| -49% | -$2.72M |
|
1680
Kraft Heinz
KHC
$30.4B
| $2.88M | ﹤0.01% |
+80,234
| New | +$2.88M |
|
1681
CALL
Freshworks
FRSH
$2.84B
| $2.88M | ﹤0.01% |
+109,600
| New | +$3.98M |
|
1682
International Flavors & Fragrances
IFF
$19.4B
| $2.88M | ﹤0.01% |
+19,086
| New | +$2.78M |
|
|
BLDP
1683
PUT
Ballard Power Systems
BLDP
$874M
| $2.87M | ﹤0.01% |
228,900
+91,400
| +66% | +$1.38M |
|
1684
CALL
M&T Bank
MTB
$36.2B
| $2.87M | ﹤0.01% |
18,700
-3,200
| -15% | -$491K |
|
1685
Unilever
UL
$131B
| $2.87M | ﹤0.01% |
47,380
+38,561
| +437% | +$2.29M |
|
1686
PUT
Stratasys
SSYS
$697M
| $2.85M | ﹤0.01% |
116,600
+70,700
| +154% | +$1.97M |
|
1687
PUT
Archer Daniels Midland
ADM
$41.4B
| $2.85M | ﹤0.01% |
42,200
+23,900
| +131% | +$1.54M |
|
1688
United Natural Foods
UNFI
$3.01B
| $2.85M | ﹤0.01% |
58,110
+37,544
| +183% | +$1.81M |
|
|
AZUL
1689
PUT
DELISTED
Azul
AZUL
| $2.85M | ﹤0.01% |
216,000
+149,000
| +222% | +$2.26M |
|
1690
PUT
Chubb
CB
$140B
| $2.84M | ﹤0.01% |
14,700
+9,300
| +172% | +$1.75M |
|
1691
FuelCell Energy
FCEL
$1.7B
| $2.84M | ﹤0.01% |
18,202
+15,207
| +508% | +$3.58M |
|
1692
CALL
Kinross Gold
KGC
$28.5B
| $2.83M | ﹤0.01% |
720,900
+394,100
| +121% | +$2.36M |
|
1693
CALL
Trimble
TRMB
$12.3B
| $2.83M | ﹤0.01% |
32,500
-50,300
| -61% | -$4.32M |
|
1694
CALL
United Parks & Resorts
PRKS
$2.11B
| $2.83M | ﹤0.01% |
43,600
-91,500
| -68% | -$5.76M |
|
1695
Warner Bros
WBD
$64.6B
| $2.83M | ﹤0.01% |
120,076
+16,994
| +16% | +$423K |
|
1696
CALL
Appian
APPN
$1.74B
| $2.82M | ﹤0.01% |
43,200
+4,900
| +13% | +$407K |
|
1697
CALL
Viatris
VTRS
$20.1B
| $2.81M | ﹤0.01% |
207,900
-35,700
| -15% | -$477K |
|
1698
iShares Silver Trust
SLV
$28.1B
| $2.81M | ﹤0.01% |
130,685
-275,589
| -68% | -$5.95M |
|
1699
PUT
STMicroelectronics
STM
$46B
| $2.81M | ﹤0.01% |
57,500
-19,300
| -25% | -$913K |
|
1700
PUT
Navios Maritime Partners
NMM
$2.25B
| $2.81M | ﹤0.01% |
111,900
+39,600
| +55% | +$1.1M |
|
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.