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 | |
|---|---|---|---|---|---|---|
|
TBHC
3501
CALL
DELISTED
The Brand House Collective
TBHC
| $622K | ﹤0.01% |
41,700
+16,200
| +64% | +$334K |
|
|
HA
3502
PUT
DELISTED
Hawaiian Holdings, Inc.
HA
| $622K | ﹤0.01% |
33,900
-4,700
| -12% | -$95.2K |
|
|
BPMP
3503
CALL
DELISTED
BP Midstream Partners LP Common Units representing Limited Partner Interests
BPMP
| $622K | ﹤0.01% |
40,700
+26,600
| +189% | +$360K |
|
|
TPGY
3504
DELISTED
TPG Pace Beneficial Finance Corp.
TPGY
| $621K | ﹤0.01% |
63,330
-86,861
| -58% | -$913K |
|
|
AMRN
3505
Amarin Corp
AMRN
$292M
| $620K | ﹤0.01% |
9,204
+6,263
| +213% | +$519K |
|
|
CMPS
3506
Compass Pathways
CMPS
$1.46B
| $620K | ﹤0.01% |
28,071
+15,314
| +120% | +$487K |
|
3507
PUT
Manchester United
MANU
$4.03B
| $620K | ﹤0.01% |
43,600
-83,000
| -66% | -$1.31M |
|
3508
CALL
Banco Santander
SAN
$200B
| $620K | ﹤0.01% |
188,700
-63,100
| -25% | -$222K |
|
|
SEE
3509
CALL
DELISTED
Sealed Air
SEE
| $620K | ﹤0.01% |
9,200
-25,500
| -73% | -$1.59M |
|
3510
CALL
Bio-Techne
TECH
$11.2B
| $620K | ﹤0.01% |
4,800
+2,800
| +140% | +$343K |
|
3511
CALL
Universal Corp
UVV
$1.36B
| $620K | ﹤0.01% |
11,300
+7,900
| +232% | +$394K |
|
3512
CALL
Sonoco
SON
$5.99B
| $619K | ﹤0.01% |
10,700
-11,500
| -52% | -$687K |
|
|
KNBE
3513
CALL
DELISTED
KnowBe4, Inc. Class A Common Stock
KNBE
| $619K | ﹤0.01% |
+27,000
| New | +$634K |
|
|
DISH
3514
DELISTED
DISH Network Corp.
DISH
| $619K | ﹤0.01% |
+19,084
| New | +$711K |
|
3515
PUT
Credit Acceptance
CACC
$5.84B
| $618K | ﹤0.01% |
900
-10,800
| -92% | -$6.95M |
|
|
EFC
3516
CALL
Ellington Financial
EFC
$1.7B
| $618K | ﹤0.01% |
36,200
-8,600
| -19% | -$153K |
|
|
WCC
3517
PUT
WESCO International
WCC
$16.1B
| $618K | ﹤0.01% |
4,700
-5,700
| -55% | -$729K |
|
3518
Hartford Financial Services
HIG
$39.3B
| $617K | ﹤0.01% |
8,941
-23,848
| -73% | -$1.68M |
|
3519
PUT
Markel Group
MKL
$25.5B
| $617K | ﹤0.01% |
500
+400
| +400% | +$505K |
|
3520
PUT
Envista
NVST
$4.39B
| $617K | ﹤0.01% |
13,700
-112,600
| -89% | -$4.63M |
|
|
IMGN
3521
DELISTED
Immunogen Inc
IMGN
| $616K | ﹤0.01% |
83,063
+61,163
| +279% | +$380K |
|
3522
Alaska Air
ALK
$5.43B
| $615K | ﹤0.01% |
11,815
+3,614
| +44% | +$196K |
|
3523
CALL
Coursera
COUR
$1.68B
| $615K | ﹤0.01% |
25,200
+5,300
| +27% | +$161K |
|
3524
CALL
Pegasystems
PEGA
$4.85B
| $615K | ﹤0.01% |
11,000
+10,600
| +2,650% | +$628K |
|
3525
CALL
Monster Beverage
MNST
$95.6B
| $614K | ﹤0.01% |
12,800
+2,800
| +28% | +$124K |
|
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.