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 | |
|---|---|---|---|---|---|---|
|
BERY
3701
PUT
DELISTED
Berry Global Group, Inc.
BERY
| $531K | ﹤0.01% |
7,841
-871
| -10% | -$53.9K |
|
|
LGF.B
3702
PUT
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $530K | ﹤0.01% |
31,900
+5,100
| +19% | +$71.4K |
|
3703
CALL
Upwork
UPWK
$1.21B
| $529K | ﹤0.01% |
15,500
-11,400
| -42% | -$504K |
|
|
HBP
3704
DELISTED
Huttig Building Products, Inc.
HBP
| $529K | ﹤0.01% |
+47,800
| New | +$388K |
|
3705
PUT
Diageo
DEO
$49.4B
| $528K | ﹤0.01% |
2,400
-38,200
| -94% | -$7.83M |
|
3706
CALL
Black Stone Minerals
BSM
$3.14B
| $527K | ﹤0.01% |
51,100
-94,100
| -65% | -$1.09M |
|
3707
CALL
Cipher Digital
CIFR
$8.35B
| $527K | ﹤0.01% |
+113,900
| New | +$829K |
|
|
NXDR
3708
PUT
Nextdoor Holdings
NXDR
$877M
| $527K | ﹤0.01% |
+66,900
| New | +$690K |
|
3709
CALL
Sphere Entertainment
SPHR
$5.06B
| $527K | ﹤0.01% |
7,500
+3,200
| +74% | +$225K |
|
3710
PUT
Xometry
XMTR
$4.58B
| $527K | ﹤0.01% |
+10,300
| New | +$530K |
|
3711
CALL
Zymeworks
ZYME
$1.66B
| $527K | ﹤0.01% |
32,200
+30,100
| +1,433% | +$628K |
|
|
KREF
3712
CALL
KKR Real Estate Finance Trust
KREF
$471M
| $526K | ﹤0.01% |
25,300
+21,700
| +603% | +$467K |
|
|
PDCE
3713
CALL
DELISTED
PDC Energy, Inc.
PDCE
| $526K | ﹤0.01% |
10,800
-11,700
| -52% | -$600K |
|
3714
CALL
Quantum-Si Incorporated
QSI
$166M
| $525K | ﹤0.01% |
66,800
-39,900
| -37% | -$300K |
|
3715
PUT
GrowGeneration
GRWG
$88.3M
| $524K | ﹤0.01% |
40,200
-32,400
| -45% | -$621K |
|
|
LHDX
3716
DELISTED
Lucira Health, Inc. Common Stock
LHDX
| $524K | ﹤0.01% |
60,932
+60,889
| +141,602% | +$387K |
|
3717
Alpha Metallurgical Resources
AMR
$1.84B
| $523K | ﹤0.01% |
+8,570
| New | +$475K |
|
3718
CALL
Porch Group
PRCH
$1.38B
| $523K | ﹤0.01% |
33,600
-53,300
| -61% | -$1.03M |
|
3719
PUT
Marriott Vacations Worldwide
VAC
$3.52B
| $523K | ﹤0.01% |
3,100
+1,800
| +138% | +$289K |
|
|
ERF
3720
PUT
DELISTED
Enerplus Corporation
ERF
| $523K | ﹤0.01% |
49,500
+17,400
| +54% | +$169K |
|
3721
Banco Bradesco
BBD
$38.3B
| $522K | ﹤0.01% |
168,090
+65,468
| +64% | +$216K |
|
|
CLDT
3722
CALL
Chatham Lodging
CLDT
$638M
| $522K | ﹤0.01% |
38,100
-9,300
| -20% | -$120K |
|
3723
CALL
DoubleVerify
DV
$1.73B
| $522K | ﹤0.01% |
15,700
+15,600
| +15,600% | +$520K |
|
3724
PUT
TechnipFMC
FTI
$28.9B
| $522K | ﹤0.01% |
88,300
+28,300
| +47% | +$194K |
|
3725
PUT
Smith & Wesson
SWBI
$657M
| $522K | ﹤0.01% |
29,500
-76,700
| -72% | -$1.58M |
|
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.