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 | |
|---|---|---|---|---|---|---|
6601
Tredegar Corp
TG
$268M
| $79K | ﹤0.01% |
6,768
+6,406
| +1,770% | +$77.2K |
|
6602
PUT
Vertiv
VRT
$104B
| $79K | ﹤0.01% |
3,200
+1,800
| +129% | +$45K |
|
|
DMTK
6603
CALL
DELISTED
DermTech, Inc. Common Stock
DMTK
| $79K | ﹤0.01% |
5,000
-26,300
| -84% | -$632K |
|
|
MIXT
6604
DELISTED
MIX TELEMATICS LIMITED
MIXT
| $79K | ﹤0.01% |
6,290
-2,429
| -28% | -$29.5K |
|
|
DCT
6605
DELISTED
Duck Creek Technologies, Inc. Common Stock
DCT
| $79K | ﹤0.01% |
2,653
+2,393
| +920% | +$77K |
|
|
TYME
6606
CALL
DELISTED
Tyme Technologies, Inc. Common Stock
TYME
| $79K | ﹤0.01% |
131,900
+119,600
| +972% | +$103K |
|
|
ACH
6607
PUT
DELISTED
Alum Corp of China Ltd
ACH
| $79K | ﹤0.01% |
5,800
+4,000
| +222% | +$59K |
|
6608
PUT
Agree Realty
ADC
$9.49B
| $78K | ﹤0.01% |
1,100
+1,000
| +1,000% | +$69.4K |
|
6609
AudioCodes
AUDC
$256M
| $78K | ﹤0.01% |
2,266
+1,563
| +222% | +$54.5K |
|
6610
Banco Santander Chile
BSAC
$16.4B
| $78K | ﹤0.01% |
+4,808
| New | +$86.2K |
|
6611
PUT
CoinShares ETF Trust CoinShares Bitcoin and Ether ETF
BTF
$13.8M
| $78K | ﹤0.01% |
+880
| New | +$96.7K |
|
6612
PUT
Codexis
CDXS
$154M
| $78K | ﹤0.01% |
2,500
-1,200
| -32% | -$39.5K |
|
6613
CALL
Equity Lifestyle Properties
ELS
$12.6B
| $78K | ﹤0.01% |
+900
| New | +$75.7K |
|
|
HSII
6614
PUT
DELISTED
Heidrick & Struggles
HSII
| $78K | ﹤0.01% |
1,800
+1,700
| +1,700% | +$77.3K |
|
6615
Hexcel
HXL
$7.88B
| $78K | ﹤0.01% |
1,511
+1,190
| +371% | +$67.4K |
|
|
IMCC
6616
PUT
IM Cannabis
IMCC
$1.15M
| $78K | ﹤0.01% |
+392
| New | +$76.4K |
|
6617
Immunome
IMNM
$2.84B
| $78K | ﹤0.01% |
6,086
+5,986
| +5,986% | +$107K |
|
6618
CALL
Kearny Financial
KRNY
$613M
| $78K | ﹤0.01% |
5,900
+500
| +9% | +$6.57K |
|
6619
CALL
LG Display
LPL
$3.23B
| $78K | ﹤0.01% |
7,800
-125,500
| -94% | -$1.08M |
|
6620
PUT
NanoViricides
NNVC
$38.8M
| $78K | ﹤0.01% |
21,000
+20,400
| +3,400% | +$92.9K |
|
6621
CALL
Nomad Foods
NOMD
$1.66B
| $78K | ﹤0.01% |
3,100
+400
| +15% | +$10.3K |
|
|
PPBT
6622
PUT
Purple Biotech
PPBT
$1.4M
| $78K | ﹤0.01% |
102
+100
| +5,000% | +$85.2K |
|
6623
CALL
Regenxbio
RGNX
$659M
| $78K | ﹤0.01% |
2,400
-300
| -11% | -$10.2K |
|
6624
CALL
Sylvamo
SLVM
$1.56B
| $78K | ﹤0.01% |
+2,800
| New | +$81.6K |
|
|
TRVG
6625
CALL
trivago
TRVG
$375M
| $78K | ﹤0.01% |
7,200
+5,600
| +350% | +$67.5K |
|
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.