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 | |
|---|---|---|---|---|---|---|
2251
Enterprise Products Partners
EPD
$83.8B
| $1.64M | ﹤0.01% |
74,681
+47,805
| +178% | +$1.07M |
|
2252
PUT
Host Hotels & Resorts
HST
$16.8B
| $1.64M | ﹤0.01% |
94,200
-136,500
| -59% | -$2.3M |
|
2253
PUT
CNX Resources
CNX
$4.85B
| $1.64M | ﹤0.01% |
119,000
+30,600
| +35% | +$431K |
|
|
JKS
2254
PUT
JinkoSolar
JKS
$775M
| $1.64M | ﹤0.01% |
35,600
-26,200
| -42% | -$1.35M |
|
|
SCHW
2255
Charles Schwab
SCHW
$177B
| $1.63M | ﹤0.01% |
19,431
+16,122
| +487% | +$1.3M |
|
2256
PUT
Gray Television
GTN
$407M
| $1.63M | ﹤0.01% |
81,000
+59,300
| +273% | +$1.31M |
|
2257
PUT
LPL Financial
LPLA
$26.3B
| $1.63M | ﹤0.01% |
10,200
-4,100
| -29% | -$677K |
|
2258
CALL
Rekor Systems
REKR
$83.8M
| $1.63M | ﹤0.01% |
249,200
+104,400
| +72% | +$982K |
|
2259
CALL
SS&C Technologies
SSNC
$17.8B
| $1.63M | ﹤0.01% |
19,900
-1,500
| -7% | -$115K |
|
2260
CALL
ZTO Express
ZTO
$18.2B
| $1.63M | ﹤0.01% |
57,800
-39,300
| -40% | -$1.17M |
|
|
BIOR
2261
CALL
DELISTED
Biora Therapeutics, Inc. Common Stock
BIOR
| $1.63M | ﹤0.01% |
3,123
+2,839
| +1,000% | +$2.04M |
|
2262
PUT
Ferrari
RACE
$63.3B
| $1.63M | ﹤0.01% |
6,300
-28,800
| -82% | -$7.1M |
|
2263
H&R Block
HRB
$5.18B
| $1.63M | ﹤0.01% |
69,172
+15,116
| +28% | +$367K |
|
|
WRK
2264
CALL
DELISTED
WestRock Company
WRK
| $1.63M | ﹤0.01% |
36,700
+17,700
| +93% | +$833K |
|
2265
PUT
Magnite
MGNI
$2.65B
| $1.62M | ﹤0.01% |
92,800
+43,700
| +89% | +$985K |
|
2266
Performance Food Group
PFGC
$17.5B
| $1.62M | ﹤0.01% |
35,359
+15,922
| +82% | +$724K |
|
2267
CALL
Schrodinger
SDGR
$1.12B
| $1.62M | ﹤0.01% |
46,500
+12,800
| +38% | +$584K |
|
2268
AutoZone
AZO
$48.3B
| $1.62M | ﹤0.01% |
772
+758
| +5,414% | +$1.41M |
|
2269
CALL
AMN Healthcare
AMN
$1.28B
| $1.61M | ﹤0.01% |
13,200
+700
| +6% | +$77.7K |
|
2270
PUT
Xerox
XRX
$337M
| $1.61M | ﹤0.01% |
71,300
+63,800
| +851% | +$1.3M |
|
2271
PUT
Yum China
YUMC
$14.9B
| $1.61M | ﹤0.01% |
32,400
-6,100
| -16% | -$331K |
|
|
BBIG
2272
PUT
DELISTED
Vinco Ventures, Inc. Common Stock
BBIG
| $1.61M | ﹤0.01% |
49,818
+42,681
| +598% | +$2.5M |
|
2273
Allstate
ALL
$66.9B
| $1.61M | ﹤0.01% |
13,705
+12,961
| +1,742% | +$1.53M |
|
2274
CALL
Trupanion
TRUP
$1.05B
| $1.61M | ﹤0.01% |
12,200
+8,200
| +205% | +$955K |
|
|
DVAX
2275
PUT
DELISTED
Dynavax Technologies
DVAX
| $1.61M | ﹤0.01% |
114,400
-34,000
| -23% | -$559K |
|
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.