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 | |
|---|---|---|---|---|---|---|
5526
CALL
KBR
KBR
$4.62B
| $157K | ﹤0.01% |
3,300
-2,700
| -45% | -$119K |
|
|
RAPT
5527
DELISTED
RAPT Therapeutics
RAPT
| $157K | ﹤0.01% |
536
-5,437
| -91% | -$1.45M |
|
|
SAND
5528
DELISTED
Sandstorm Gold
SAND
| $157K | ﹤0.01% |
+25,327
| New | +$158K |
|
|
ECHO
5529
EchoStar
ECHO
$24.4B
| $157K | ﹤0.01% |
5,972
-23,361
| -80% | -$617K |
|
5530
PUT
TFS Financial
TFSL
$5.16B
| $157K | ﹤0.01% |
8,800
+1,100
| +14% | +$21K |
|
5531
Wrap Technologies
WRAP
$103M
| $157K | ﹤0.01% |
40,167
+25,407
| +172% | +$133K |
|
|
KRTX
5532
CALL
DELISTED
Karuna Therapeutics, Inc. Common Stock
KRTX
| $157K | ﹤0.01% |
1,200
+400
| +50% | +$51.7K |
|
|
INBX
5533
CALL
DELISTED
Inhibrx, Inc. Common Stock
INBX
| $157K | ﹤0.01% |
+3,600
| New | +$144K |
|
5534
PUT
Alexandria Real Estate Equities
ARE
$8.97B
| $156K | ﹤0.01% |
700
-1,300
| -65% | -$269K |
|
5535
PUT
Avient
AVNT
$3.33B
| $156K | ﹤0.01% |
2,800
+2,700
| +2,700% | +$148K |
|
5536
Goosehead Insurance
GSHD
$2.2B
| $156K | ﹤0.01% |
+1,204
| New | +$173K |
|
5537
CALL
Heritage Financial
HFWA
$1.22B
| $156K | ﹤0.01% |
+6,400
| New | +$158K |
|
5538
PUT
Humacyte
HUMA
$176M
| $156K | ﹤0.01% |
+21,600
| New | +$214K |
|
|
OPLN
5539
PUT
Openlane
OPLN
$4.21B
| $156K | ﹤0.01% |
10,000
-15,700
| -61% | -$240K |
|
5540
SPS Commerce
SPSC
$2.64B
| $156K | ﹤0.01% |
+1,098
| New | +$165K |
|
5541
PUT
Watsco Inc
WSO
$12.7B
| $156K | ﹤0.01% |
500
-1,200
| -71% | -$355K |
|
|
FRG
5542
CALL
DELISTED
Franchise Group, Inc.
FRG
| $156K | ﹤0.01% |
3,000
+2,700
| +900% | +$121K |
|
|
SJI
5543
CALL
DELISTED
South Jersey Industries, Inc.
SJI
| $156K | ﹤0.01% |
6,000
+3,800
| +173% | +$90.3K |
|
|
GSKY
5544
PUT
DELISTED
GreenSky, Inc. Class A Common Stock
GSKY
| $156K | ﹤0.01% |
13,800
-278,200
| -95% | -$3.26M |
|
5545
PUT
CONMED
CNMD
$1.39B
| $155K | ﹤0.01% |
1,100
-20,100
| -95% | -$2.85M |
|
5546
PUT
Henry Schein
HSIC
$9.77B
| $155K | ﹤0.01% |
2,000
-10,000
| -83% | -$764K |
|
5547
CALL
Laureate Education
LAUR
$5.28B
| $155K | ﹤0.01% |
12,700
+3,000
| +31% | +$39.3K |
|
5548
CALL
Northern Trust
NTRS
$33.3B
| $155K | ﹤0.01% |
1,300
-1,800
| -58% | -$216K |
|
5549
PUT
RUM Group Inc
RUM
$1.61B
| $155K | ﹤0.01% |
+14,400
| New | +$152K |
|
5550
Vuzix
VUZI
$194M
| $155K | ﹤0.01% |
17,983
-23,174
| -56% | -$250K |
|
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.