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 | |
|---|---|---|---|---|---|---|
4576
PUT
eHealth
EHTH
$42.2M
| $298K | ﹤0.01% |
11,700
-28,100
| -71% | -$933K |
|
4577
CALL
GeneDx Holdings
WGS
$1.93B
| $298K | ﹤0.01% |
+2,030
| New | +$454K |
|
|
AEVA
4578
PUT
Aeva Technologies
AEVA
$1.2B
| $297K | ﹤0.01% |
7,860
-1,540
| -16% | -$64.7K |
|
|
FRMM
4579
CALL
Forum Markets
FRMM
$68.2M
| $297K | ﹤0.01% |
20
-40
| -67% | -$714K |
|
4580
CALL
CuriosityStream
CURI
$145M
| $297K | ﹤0.01% |
50,200
+5,600
| +13% | +$47.2K |
|
|
SII
4581
PUT
Sprott
SII
$2.66B
| $297K | ﹤0.01% |
6,600
+4,000
| +154% | +$169K |
|
|
XXII
4582
22nd Century Group
XXII
$1.38M
| – | – |
0
| – | – |
|
4583
CALL
Sprinklr
CXM
$1.49B
| $296K | ﹤0.01% |
+18,700
| New | +$306K |
|
4584
CALL
Kosmos Energy
KOS
$1.6B
| $296K | ﹤0.01% |
85,800
+81,200
| +1,765% | +$291K |
|
|
VRN
4585
PUT
DELISTED
Veren
VRN
| $296K | ﹤0.01% |
55,600
+53,900
| +3,171% | +$262K |
|
|
ONC
4586
BeOne Medicines Ltd
ONC
$32.8B
| $296K | ﹤0.01% |
1,093
+585
| +115% | +$198K |
|
|
KL
4587
PUT
DELISTED
Kirkland Lake Gold Ltd Ordinary
KL
| $296K | ﹤0.01% |
50,900
-74,600
| -59% | -$3.15M |
|
4588
Adicet Bio
ACET
$85.2M
| $295K | ﹤0.01% |
1,056
+981
| +1,308% | +$168K |
|
4589
CALL
Cheniere Energy
CQP
$31.9B
| $295K | ﹤0.01% |
7,000
+3,300
| +89% | +$139K |
|
4590
PUT
Roper Technologies
ROP
$38.8B
| $295K | ﹤0.01% |
600
+400
| +200% | +$190K |
|
4591
PUT
SiriusXM
SIRI
$9.98B
| $295K | ﹤0.01% |
4,650
-9,620
| -67% | -$602K |
|
|
CCMP
4592
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $295K | ﹤0.01% |
+1,541
| New | +$223K |
|
4593
PUT
California Resources
CRC
$4.67B
| $294K | ﹤0.01% |
6,900
-5,300
| -43% | -$227K |
|
|
KUST
4594
CALL
Kustom Entertainment Inc
KUST
$777K
| – | – |
-1
| Closed | -$702K |
|
4595
CALL
Loews
L
$23.9B
| $294K | ﹤0.01% |
5,100
-6,100
| -54% | -$346K |
|
4596
PUT
Rapid7
RPD
$645M
| $294K | ﹤0.01% |
2,500
-56,600
| -96% | -$6.98M |
|
4597
PUT
Terex
TEX
$7.18B
| $294K | ﹤0.01% |
6,700
-300
| -4% | -$13.5K |
|
|
VLRS
4598
Controladora Vuela Compania de Aviacion
VLRS
$900M
| $294K | ﹤0.01% |
16,379
-1,750
| -10% | -$31.4K |
|
4599
CALL
Yext
YEXT
$547M
| $294K | ﹤0.01% |
29,700
+19,500
| +191% | +$219K |
|
|
FTCV
4600
PUT
DELISTED
FinTech Acquisition Corp. V Class A Common Stock
FTCV
| $294K | ﹤0.01% |
29,700
-50,300
| -63% | -$516K |
|
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.