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 | |
|---|---|---|---|---|---|---|
|
LOMA
5751
Loma Negra
LOMA
$1.33B
| $136K | ﹤0.01% |
20,453
+11,285
| +123% | +$74.6K |
|
|
OPRA
5752
CALL
Opera Ltd
OPRA
$1.75B
| $136K | ﹤0.01% |
19,300
+12,800
| +197% | +$104K |
|
5753
PUT
Perdoceo Education
PRDO
$2.04B
| $136K | ﹤0.01% |
11,600
-13,000
| -53% | -$142K |
|
5754
Radian Group
RDN
$5.22B
| $136K | ﹤0.01% |
+6,439
| New | +$143K |
|
5755
PUT
Rekor Systems
REKR
$90M
| $136K | ﹤0.01% |
20,800
-15,100
| -42% | -$142K |
|
|
AY
5756
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $136K | ﹤0.01% |
3,815
+1,315
| +53% | +$49.3K |
|
|
HLTH
5757
PUT
DELISTED
Cue Health Inc. Common Stock
HLTH
| $136K | ﹤0.01% |
+10,200
| New | +$112K |
|
|
AIV
5758
CALL
Aimco
AIV
$387M
| $135K | ﹤0.01% |
17,600
-63,100
| -78% | -$482K |
|
5759
CALL
BBVA Argentina
BBAR
$3.86B
| $135K | ﹤0.01% |
43,100
+4,300
| +11% | +$15.2K |
|
|
EH
5760
PUT
EHang Holdings
EH
$411M
| $135K | ﹤0.01% |
9,100
-16,200
| -64% | -$340K |
|
|
HI
5761
CALL
DELISTED
Hillenbrand
HI
| $135K | ﹤0.01% |
2,600
+1,400
| +117% | +$66.9K |
|
5762
CALL
MasterCraft Boat Holdings
MCFT
$582M
| $135K | ﹤0.01% |
4,800
-4,000
| -45% | -$109K |
|
5763
CALL
Owens Corning
OC
$11.5B
| $135K | ﹤0.01% |
1,500
-23,800
| -94% | -$2.16M |
|
5764
PUT
Oramed Pharmaceuticals
ORMP
$180M
| $135K | ﹤0.01% |
9,500
-300
| -3% | -$6.27K |
|
5765
CALL
Perella Weinberg Partners
PWP
$1.25B
| $135K | ﹤0.01% |
10,500
-75,400
| -88% | -$992K |
|
5766
PUT
Reynolds Consumer Products
REYN
$5.32B
| $135K | ﹤0.01% |
4,300
+3,600
| +514% | +$105K |
|
|
SOL
5767
CALL
DELISTED
Emeren Group
SOL
| $135K | ﹤0.01% |
22,700
-107,200
| -83% | -$766K |
|
5768
PUT
Vital Farms
VITL
$548M
| $135K | ﹤0.01% |
7,500
+7,000
| +1,400% | +$124K |
|
5769
AES
AES
$10.5B
| $134K | ﹤0.01% |
5,517
-9,071
| -62% | -$220K |
|
5770
CALL
Alpha Metallurgical Resources
AMR
$1.76B
| $134K | ﹤0.01% |
+2,200
| New | +$122K |
|
5771
ARK Genomic Revolution ETF
ARKG
$1.6B
| $134K | ﹤0.01% |
+2,200
| New | +$152K |
|
5772
PUT
Brighthouse Financial
BHF
$3.55B
| $134K | ﹤0.01% |
2,600
-3,000
| -54% | -$153K |
|
5773
CALL
CarGurus
CARG
$3.33B
| $134K | ﹤0.01% |
4,000
-8,700
| -69% | -$306K |
|
5774
CALL
Driven Brands
DRVN
$2.4B
| $134K | ﹤0.01% |
4,000
+3,300
| +471% | +$103K |
|
|
FPI
5775
Farmland Partners
FPI
$418M
| $134K | ﹤0.01% |
11,226
+9,636
| +606% | +$115K |
|
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.