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 | |
|---|---|---|---|---|---|---|
|
ACB
6926
Aurora Cannabis
ACB
$173M
| $62K | ﹤0.01% |
1,161
-1,303
| -53% | -$87.6K |
|
6927
CALL
Agilon Health
AGL
$1.53B
| $62K | ﹤0.01% |
92
+76
| +475% | +$46.2K |
|
6928
PUT
ASE Group
ASX
$77.3B
| $62K | ﹤0.01% |
+8,000
| New | +$58.8K |
|
6929
CALL
ATI
ATI
$25.6B
| $62K | ﹤0.01% |
3,900
-48,400
| -93% | -$777K |
|
6930
Full House Resorts
FLL
$80.1M
| $62K | ﹤0.01% |
5,191
-13,399
| -72% | -$145K |
|
6931
Future FinTech Group
FTFT
$1.91M
| $62K | ﹤0.01% |
58
+23
| +66% | +$32K |
|
6932
PUT
Honda
HMC
$39.1B
| $62K | ﹤0.01% |
2,200
-25,000
| -92% | -$727K |
|
6933
CALL
Heron Therapeutics
HRTX
$93.9M
| $62K | ﹤0.01% |
6,900
-30,300
| -81% | -$309K |
|
6934
PUT
KNOT Offshore Partners
KNOP
$372M
| $62K | ﹤0.01% |
4,700
+400
| +9% | +$6.73K |
|
6935
Kosmos Energy
KOS
$1.6B
| $62K | ﹤0.01% |
18,042
+986
| +6% | +$3.54K |
|
6936
Lands' End
LE
$370M
| $62K | ﹤0.01% |
3,190
+2,008
| +170% | +$46.7K |
|
|
NAK
6937
Northern Dynasty Minerals
NAK
$784M
| $62K | ﹤0.01% |
191,087
+3,505
| +2% | +$1.4K |
|
6938
CALL
Ocular Therapeutix
OCUL
$1.79B
| $62K | ﹤0.01% |
8,900
-4,900
| -36% | -$38.1K |
|
6939
CALL
Organogenesis Holdings
ORGO
$305M
| $62K | ﹤0.01% |
6,800
-600
| -8% | -$6.37K |
|
6940
Pacira BioSciences
PCRX
$1.04B
| $62K | ﹤0.01% |
+1,041
| New | +$57.4K |
|
6941
Restaurant Brands International
QSR
$25.7B
| $62K | ﹤0.01% |
+1,023
| New | +$60.3K |
|
6942
PUT
Revolution Medicines
RVMD
$39.9B
| $62K | ﹤0.01% |
2,500
+2,300
| +1,150% | +$64.8K |
|
6943
CALL
Sanmina
SANM
$9.95B
| $62K | ﹤0.01% |
1,500
-6,200
| -81% | -$244K |
|
6944
ProShares Russell 2000 Dividend Growers ETF
SMDV
$695M
| $62K | ﹤0.01% |
+934
| New | +$60.8K |
|
6945
Simply Good Foods
SMPL
$901M
| $62K | ﹤0.01% |
1,504
-1,267
| -46% | -$48.4K |
|
6946
PUT
Teekay
TK
$1.01B
| $62K | ﹤0.01% |
19,900
-6,900
| -26% | -$23.8K |
|
|
TSE
6947
PUT
DELISTED
Trinseo
TSE
| $62K | ﹤0.01% |
1,200
-1,900
| -61% | -$103K |
|
|
SUNL
6948
PUT
DELISTED
Sunlight Financial Holdings, Inc.
SUNL
| $62K | ﹤0.01% |
+655
| New | +$63.1K |
|
|
SJI
6949
PUT
DELISTED
South Jersey Industries, Inc.
SJI
| $62K | ﹤0.01% |
2,400
+1,600
| +200% | +$38K |
|
|
NWECW
6950
CALL
DELISTED
NORTHWESTERN CORPORATION WARANTS
NWECW
| $62K | ﹤0.01% |
1,100
+700
| +175% | +$39.5K |
|
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.