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 | |
|---|---|---|---|---|---|---|
|
UMPQ
6251
DELISTED
Umpqua Holdings Corp
UMPQ
| $100K | ﹤0.01% |
+5,212
| New | +$105K |
|
|
SRGA
6252
CALL
DELISTED
Surgalign Holdings, Inc. Common Stock
SRGA
| $100K | ﹤0.01% |
4,657
+3,777
| +429% | +$101K |
|
6253
CALL
ACV Auctions
ACVA
$1.34B
| $99K | ﹤0.01% |
5,300
+4,400
| +489% | +$86.4K |
|
6254
CALL
Blend Labs
BLND
$487M
| $99K | ﹤0.01% |
+13,500
| New | +$156K |
|
6255
PUT
Eagle Materials
EXP
$6.7B
| $99K | ﹤0.01% |
600
-2,200
| -79% | -$338K |
|
6256
PUT
Enpro
NPO
$6.94B
| $99K | ﹤0.01% |
+900
| New | +$90.4K |
|
6257
PUT
OR Royalties Inc
OR
$6.04B
| $99K | ﹤0.01% |
8,100
+100
| +1% | +$1.22K |
|
6258
CALL
Quantum Computing Inc
QUBT
$2B
| $99K | ﹤0.01% |
+29,200
| New | +$155K |
|
|
TTSH
6259
DELISTED
Tile Shop Holdings
TTSH
| $99K | ﹤0.01% |
+13,897
| New | +$108K |
|
6260
CALL
Verastem
VSTM
$516M
| $99K | ﹤0.01% |
4,025
-1,567
| -28% | -$49.5K |
|
|
TVRD
6261
PUT
Tvardi Therapeutics
TVRD
$18.8M
| $99K | ﹤0.01% |
228
+86
| +61% | +$43.2K |
|
|
DCPH
6262
PUT
DELISTED
Deciphera Pharmaceuticals, Inc. Common Stock
DCPH
| $99K | ﹤0.01% |
10,200
+8,100
| +386% | +$152K |
|
|
HYRE
6263
DELISTED
HyreCar Inc. Common Stock
HYRE
| $99K | ﹤0.01% |
21,056
+9,864
| +88% | +$61.6K |
|
6264
Allogene Therapeutics
ALLO
$673M
| $98K | ﹤0.01% |
6,605
+2,455
| +59% | +$43.3K |
|
6265
Angi Inc
ANGI
$194M
| $98K | ﹤0.01% |
1,072
-496
| -32% | -$53.7K |
|
6266
Artisan Partners
APAM
$3.04B
| $98K | ﹤0.01% |
2,063
-13,499
| -87% | -$648K |
|
6267
CALL
Arvinas
ARVN
$542M
| $98K | ﹤0.01% |
1,200
-700
| -37% | -$57K |
|
|
BPT
6268
PUT
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $98K | ﹤0.01% |
25,100
+19,200
| +325% | +$76.6K |
|
6269
H.B. Fuller
FUL
$3.2B
| $98K | ﹤0.01% |
+1,214
| New | +$89.7K |
|
6270
Gogo Inc
GOGO
$603M
| $98K | ﹤0.01% |
+7,276
| New | +$108K |
|
6271
PUT
The Joint Corp
JYNT
$119M
| $98K | ﹤0.01% |
1,500
+300
| +25% | +$24.2K |
|
|
KC
6272
Kingsoft Cloud Holdings
KC
$3.75B
| $98K | ﹤0.01% |
6,231
-40,121
| -87% | -$862K |
|
6273
PUT
Marcus Corp
MCS
$949M
| $98K | ﹤0.01% |
5,500
+3,300
| +150% | +$61.8K |
|
6274
MeiraGTx Holdings
MGTX
$1.16B
| $98K | ﹤0.01% |
4,161
+3,663
| +736% | +$70.1K |
|
6275
Oramed Pharmaceuticals
ORMP
$177M
| $98K | ﹤0.01% |
+6,930
| New | +$145K |
|
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.