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 | |
|---|---|---|---|---|---|---|
2551
CALL
Momentus
MNTS
$88.7M
| $1.27M | ﹤0.01% |
+24
| New | +$2.54M |
|
2552
CALL
NOV
NOV
$7.45B
| $1.26M | ﹤0.01% |
93,400
+14,700
| +19% | +$202K |
|
2553
PUT
Cincinnati Financial
CINF
$28.3B
| $1.26M | ﹤0.01% |
11,100
-7,100
| -39% | -$840K |
|
|
JOYY
2554
JOYY Inc
JOYY
$3.73B
| $1.26M | ﹤0.01% |
+27,842
| New | +$1.44M |
|
2555
CALL
GXO Logistics
GXO
$6.06B
| $1.26M | ﹤0.01% |
+13,900
| New | +$1.25M |
|
2556
Under Armour Class C
UA
$2.92B
| $1.26M | ﹤0.01% |
69,923
-12,333
| -15% | -$240K |
|
|
ITCI
2557
PUT
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $1.26M | ﹤0.01% |
24,100
+12,100
| +101% | +$508K |
|
2558
Cardinal Health
CAH
$53.4B
| $1.26M | ﹤0.01% |
24,487
+553
| +2% | +$27.1K |
|
2559
PUT
Cracker Barrel
CBRL
$1.2B
| $1.26M | ﹤0.01% |
9,800
-1,000
| -9% | -$133K |
|
|
ETAC
2560
CALL
DELISTED
E.Merge Technology Acquisition Corp. Class A Common Stock
ETAC
| $1.26M | ﹤0.01% |
+128,000
| New | +$1.26M |
|
2561
CALL
PPG Industries
PPG
$25.9B
| $1.26M | ﹤0.01% |
7,300
-26,000
| -78% | -$4.18M |
|
2562
iShares MSCI Chile ETF
ECH
$1.01B
| $1.26M | ﹤0.01% |
+54,431
| New | +$1.36M |
|
2563
Fluor
FLR
$7.29B
| $1.25M | ﹤0.01% |
50,630
+3,059
| +6% | +$65.1K |
|
2564
PUT
Invesco CurrencyShares Australian Dollar Trust
FXA
$96.8M
| $1.25M | ﹤0.01% |
17,400
+16,900
| +3,380% | +$1.22M |
|
2565
iShares MSCI Turkey ETF
TUR
$206M
| $1.25M | ﹤0.01% |
67,513
+30,167
| +81% | +$624K |
|
|
MFGP
2566
PUT
DELISTED
Micro Focus International plc. American Depositary Shares, each representing One Ordinary Share
MFGP
| $1.25M | ﹤0.01% |
225,200
+220,500
| +4,691% | +$1.12M |
|
|
EPAY
2567
PUT
DELISTED
Bottomline Technologies Inc
EPAY
| $1.25M | ﹤0.01% |
22,200
+200
| +0.9% | +$9.35K |
|
2568
Credit Acceptance
CACC
$6B
| $1.25M | ﹤0.01% |
1,822
-1,712
| -48% | -$1.1M |
|
2569
CALL
Synopsys
SNPS
$71.5B
| $1.25M | ﹤0.01% |
3,400
-18,700
| -85% | -$6.31M |
|
2570
Texas Roadhouse
TXRH
$12.7B
| $1.25M | ﹤0.01% |
14,027
+4,577
| +48% | +$408K |
|
|
SOS
2571
CALL
SOS Limited
SOS
$18.2M
| $1.25M | ﹤0.01% |
2,030
+841
| +71% | +$1.03M |
|
2572
CALL
Arrow Electronics
ARW
$10.9B
| $1.25M | ﹤0.01% |
9,300
-8,200
| -47% | -$1.01M |
|
2573
PUT
SAP
SAP
$187B
| $1.25M | ﹤0.01% |
8,900
-12,600
| -59% | -$1.76M |
|
|
MRTX
2574
PUT
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $1.25M | ﹤0.01% |
8,500
+8,000
| +1,600% | +$1.24M |
|
|
SLCA
2575
CALL
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $1.25M | ﹤0.01% |
132,500
+51,200
| +63% | +$510K |
|
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.