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 | |
|---|---|---|---|---|---|---|
|
HBI
2651
CALL
DELISTED
Hanesbrands
HBI
| $1.18M | ﹤0.01% |
70,600
-88,900
| -56% | -$1.51M |
|
|
CUK
2652
CALL
DELISTED
Carnival PLC
CUK
| $1.18M | ﹤0.01% |
63,800
+49,800
| +356% | +$980K |
|
2653
PUT
Freshworks
FRSH
$2.84B
| $1.18M | ﹤0.01% |
+44,900
| New | +$1.63M |
|
2654
CALL
Rocket Lab Corp
RKLB
$39.9B
| $1.18M | ﹤0.01% |
+96,000
| New | +$1.32M |
|
2655
Oneok
OKE
$58.7B
| $1.18M | ﹤0.01% |
20,003
-10,032
| -33% | -$622K |
|
2656
Pool Corp
POOL
$6.7B
| $1.18M | ﹤0.01% |
2,077
-2,949
| -59% | -$1.55M |
|
2657
CALL
Navios Maritime Partners
NMM
$2.25B
| $1.17M | ﹤0.01% |
46,800
+21,200
| +83% | +$589K |
|
2658
CALL
PetMed Express
PETS
$42.5M
| $1.17M | ﹤0.01% |
46,500
+10,500
| +29% | +$291K |
|
|
OPTU
2659
PUT
Optimum Communications Inc
OPTU
$316M
| $1.17M | ﹤0.01% |
72,500
+23,700
| +49% | +$402K |
|
2660
PUT
Anavex Life Sciences
AVXL
$222M
| $1.17M | ﹤0.01% |
67,600
-39,800
| -37% | -$756K |
|
2661
CALL
CBRE Group
CBRE
$40.8B
| $1.17M | ﹤0.01% |
10,800
+5,300
| +96% | +$543K |
|
2662
CALL
Meritage Homes
MTH
$4.87B
| $1.17M | ﹤0.01% |
19,200
+15,000
| +357% | +$837K |
|
|
ARNA
2663
PUT
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $1.17M | ﹤0.01% |
12,600
+10,600
| +530% | +$698K |
|
|
VSXY
2664
Victoria's Secret
VSXY
$6.64B
| $1.17M | ﹤0.01% |
+21,061
| New | +$1.1M |
|
|
XM
2665
PUT
DELISTED
Qualtrics International Inc. Class A Common Stock
XM
| $1.17M | ﹤0.01% |
33,000
-63,100
| -66% | -$2.45M |
|
|
CVAC
2666
CALL
DELISTED
CureVac
CVAC
| $1.17M | ﹤0.01% |
34,000
-17,000
| -33% | -$684K |
|
2667
PUT
Lattice Semiconductor
LSCC
$17.6B
| $1.16M | ﹤0.01% |
15,100
-10,700
| -41% | -$794K |
|
2668
CALL
Gaming and Leisure Properties
GLPI
$12.8B
| $1.16M | ﹤0.01% |
23,900
+7,100
| +42% | +$338K |
|
2669
PUT
IMAX
IMAX
$2.38B
| $1.16M | ﹤0.01% |
65,100
+63,300
| +3,517% | +$1.21M |
|
2670
Tractor Supply
TSCO
$16.3B
| $1.16M | ﹤0.01% |
24,350
-52,570
| -68% | -$2.3M |
|
2671
PUT
U-Haul Holding Co
UHAL
$14B
| $1.16M | ﹤0.01% |
16,000
-25,000
| -61% | -$1.8M |
|
2672
PUT
International Flavors & Fragrances
IFF
$19.4B
| $1.16M | ﹤0.01% |
7,700
-7,000
| -48% | -$1.02M |
|
|
JMIA
2673
PUT
Jumia Technologies
JMIA
$726M
| $1.16M | ﹤0.01% |
101,800
-142,200
| -58% | -$2.22M |
|
|
ROCC
2674
CALL
DELISTED
Ranger Oil Corporation Class A Common Stock
ROCC
| $1.16M | ﹤0.01% |
43,100
-24,500
| -36% | -$720K |
|
2675
Calumet Specialty Products
CLMT
$3.63B
| $1.16M | ﹤0.01% |
87,851
-34,350
| -28% | -$432K |
|
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.