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 | |
|---|---|---|---|---|---|---|
1926
PUT
Charles River Laboratories
CRL
$10.9B
| $2.22M | ﹤0.01% |
5,900
+800
| +16% | +$311K |
|
1927
PUT
Shake Shack
SHAK
$2.3B
| $2.21M | ﹤0.01% |
30,700
-52,400
| -63% | -$3.98M |
|
1928
PUT
ReNew
RNW
$2.24B
| $2.21M | ﹤0.01% |
+284,400
| New | +$2.5M |
|
1929
Kirby Corp
KEX
$7.95B
| $2.21M | ﹤0.01% |
37,181
+36,812
| +9,976% | +$2.06M |
|
1930
CALL
Philips
PHG
$25.4B
| $2.2M | ﹤0.01% |
72,395
+61,257
| +550% | +$2.08M |
|
1931
PUT
VanEck Energy Income ETF
EINC
$102M
| $2.2M | ﹤0.01% |
32,000
+27,000
| +540% | +$1.5M |
|
|
VTLE
1932
CALL
DELISTED
Vital Energy
VTLE
| $2.2M | ﹤0.01% |
36,600
+400
| +1% | +$28.2K |
|
1933
PUT
Edison International
EIX
$30.7B
| $2.2M | ﹤0.01% |
32,200
-57,600
| -64% | -$3.65M |
|
|
PSTH
1934
DELISTED
Pershing Square Tontine Holdings, Ltd.
PSTH
| $2.19M | ﹤0.01% |
111,292
+65,380
| +142% | +$1.3M |
|
1935
Bath & Body Works
BBWI
$4.01B
| $2.19M | ﹤0.01% |
+31,377
| New | +$2.23M |
|
1936
CALL
GoodRx Holdings
GDRX
$1B
| $2.19M | ﹤0.01% |
67,000
+12,500
| +23% | +$503K |
|
1937
Abercrombie & Fitch
ANF
$4.17B
| $2.19M | ﹤0.01% |
+62,800
| New | +$2.45M |
|
1938
CALL
Factset
FDS
$9.05B
| $2.19M | ﹤0.01% |
4,500
-7,400
| -62% | -$3.32M |
|
1939
CALL
Moody's
MCO
$81.7B
| $2.19M | ﹤0.01% |
5,600
+3,500
| +167% | +$1.35M |
|
1940
CALL
Newell Brands
NWL
$2.16B
| $2.19M | ﹤0.01% |
100,100
+74,200
| +286% | +$1.68M |
|
|
PING
1941
PUT
DELISTED
Ping Identity Holding Corp.
PING
| $2.19M | ﹤0.01% |
95,500
+4,400
| +5% | +$112K |
|
1942
Vistra
VST
$55.1B
| $2.18M | ﹤0.01% |
+95,925
| New | +$1.92M |
|
|
EDR
1943
CALL
DELISTED
Endeavor Group Holdings, Inc.
EDR
| $2.18M | ﹤0.01% |
62,600
+36,100
| +136% | +$1.02M |
|
1944
Bread Financial
BFH
$4.21B
| $2.18M | ﹤0.01% |
+32,734
| New | +$2.42M |
|
1945
PUT
Dell
DELL
$283B
| $2.18M | ﹤0.01% |
89,400
-230,423
| -72% | -$12.8M |
|
|
NLSN
1946
CALL
DELISTED
Nielsen Holdings plc
NLSN
| $2.18M | ﹤0.01% |
106,200
-6,800
| -6% | -$138K |
|
1947
PUT
LyondellBasell Industries
LYB
$19.5B
| $2.18M | ﹤0.01% |
23,600
-2,400
| -9% | -$223K |
|
1948
CALL
Vontier
VNT
$4.33B
| $2.17M | ﹤0.01% |
70,800
+52,200
| +281% | +$1.7M |
|
1949
CALL
AvalonBay Communities
AVB
$27.1B
| $2.17M | ﹤0.01% |
8,600
-3,800
| -31% | -$906K |
|
1950
Canadian Natural Resources
CNQ
$96.9B
| $2.17M | ﹤0.01% |
104,996
-34,072
| -25% | -$690K |
|
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.