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 | |
|---|---|---|---|---|---|---|
3101
CALL
Henry Schein
HSIC
$9.64B
| $837K | ﹤0.01% |
10,800
+9,400
| +671% | +$719K |
|
|
EVA
3102
CALL
DELISTED
Enviva Inc.
EVA
| $837K | ﹤0.01% |
11,900
+4,400
| +59% | +$294K |
|
|
SLAI
3103
CALL
DELISTED
SOLAI Ltd ADS
SLAI
| $836K | ﹤0.01% |
1,947
+1,517
| +353% | +$831K |
|
3104
PUT
DTE Energy
DTE
$30.6B
| $836K | ﹤0.01% |
7,000
+5,100
| +268% | +$583K |
|
3105
MicroSectors FANG+ ETNs due Jan 8 2038
FNGS
$545M
| $836K | ﹤0.01% |
25,820
+9,589
| +59% | +$315K |
|
|
CS
3106
DELISTED
Credit Suisse Group
CS
| $836K | ﹤0.01% |
86,752
-146,765
| -63% | -$1.47M |
|
3107
PUT
YPF
YPF
$20B
| $835K | ﹤0.01% |
218,800
+24,700
| +13% | +$104K |
|
|
SWN
3108
PUT
DELISTED
Southwestern Energy Company
SWN
| $835K | ﹤0.01% |
179,200
-134,500
| -43% | -$670K |
|
3109
CALL
GrafTech
EAF
$203M
| $834K | ﹤0.01% |
7,050
+3,450
| +96% | +$400K |
|
3110
Direxion Daily FTSE China Bear 3X ETF
YANG
$91.7M
| $834K | ﹤0.01% |
+2,059
| New | +$742K |
|
3111
Ameriprise Financial
AMP
$47.6B
| $833K | ﹤0.01% |
2,763
+554
| +25% | +$164K |
|
3112
Avis
CAR
$5.78B
| $833K | ﹤0.01% |
+4,017
| New | +$890K |
|
|
SRG
3113
PUT
Seritage Growth Properties
SRG
$133M
| $833K | ﹤0.01% |
62,800
-21,200
| -25% | -$311K |
|
3114
CALL
Arbutus Biopharma
ABUS
$871M
| $832K | ﹤0.01% |
214,100
+180,200
| +532% | +$700K |
|
|
PPL
3115
PUT
PPL Corp
PPL
$27.1B
| $832K | ﹤0.01% |
27,700
-40,700
| -60% | -$1.17M |
|
|
APPH
3116
CALL
DELISTED
AppHarvest, Inc. Common Stock
APPH
| $832K | ﹤0.01% |
214,000
+177,100
| +480% | +$946K |
|
3117
PUT
Dentsply Sirona
XRAY
$2.61B
| $831K | ﹤0.01% |
14,900
+9,400
| +171% | +$517K |
|
3118
CALL
Murphy Oil
MUR
$5.38B
| $830K | ﹤0.01% |
31,800
-37,900
| -54% | -$1.05M |
|
3119
Global Ship Lease
GSL
$1.55B
| $829K | ﹤0.01% |
+36,207
| New | +$826K |
|
|
GTLS
3120
PUT
DELISTED
Chart Industries
GTLS
| $829K | ﹤0.01% |
5,200
+1,100
| +27% | +$194K |
|
3121
CALL
Toro Company
TTC
$9.01B
| $829K | ﹤0.01% |
8,300
+4,600
| +124% | +$458K |
|
3122
CALL
Babcock & Wilcox
BW
$1.4B
| $828K | ﹤0.01% |
91,800
+36,200
| +65% | +$290K |
|
3123
CALL
NatWest
NWG
$72.8B
| $828K | ﹤0.01% |
125,914
-42,807
| -25% | -$278K |
|
3124
Global X Silver Miners ETF NEW
SIL
$4.09B
| $828K | ﹤0.01% |
22,595
-14,091
| -38% | -$534K |
|
|
HIBB
3125
PUT
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $827K | ﹤0.01% |
11,500
+8,900
| +342% | +$709K |
|
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.