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 | |
|---|---|---|---|---|---|---|
2751
CALL
Herc Holdings
HRI
$5.43B
| $1.08M | ﹤0.01% |
6,900
+6,500
| +1,625% | +$1.15M |
|
2752
CALL
Howmet Aerospace
HWM
$116B
| $1.08M | ﹤0.01% |
34,000
-3,700
| -10% | -$114K |
|
2753
CALL
Alpha and Omega Semiconductor
AOSL
$923M
| $1.08M | ﹤0.01% |
17,800
+10,100
| +131% | +$437K |
|
2754
Extra Space Storage
EXR
$31.2B
| $1.07M | ﹤0.01% |
4,743
+4,084
| +620% | +$809K |
|
2755
PUT
Hewlett Packard
HPE
$63.2B
| $1.07M | ﹤0.01% |
68,200
-161,100
| -70% | -$2.43M |
|
2756
PUT
Cemex
CX
$17.4B
| $1.07M | ﹤0.01% |
158,500
+97,700
| +161% | +$636K |
|
2757
CALL
Expeditors International
EXPD
$22.9B
| $1.07M | ﹤0.01% |
8,000
-3,000
| -27% | -$376K |
|
2758
CALL
The GEO Group
GEO
$4.13B
| $1.07M | ﹤0.01% |
138,600
-157,300
| -53% | -$1.29M |
|
2759
Arqit Quantum
ARQQ
$290M
| $1.07M | ﹤0.01% |
+1,794
| New | +$999K |
|
2760
CALL
Zions Bancorporation
ZION
$10.1B
| $1.07M | ﹤0.01% |
17,000
-10,000
| -37% | -$639K |
|
|
AVTA
2761
CALL
DELISTED
Avantax, Inc. Common Stock
AVTA
| $1.07M | ﹤0.01% |
61,900
+13,700
| +28% | +$233K |
|
|
ACRE
2762
CALL
Ares Commercial Real Estate
ACRE
$252M
| $1.07M | ﹤0.01% |
73,700
+48,300
| +190% | +$737K |
|
2763
PUT
Concentrix
CNXC
$1.36B
| $1.07M | ﹤0.01% |
6,000
+4,400
| +275% | +$785K |
|
2764
Dynatrace
DT
$12.1B
| $1.07M | ﹤0.01% |
+17,748
| New | +$1.21M |
|
2765
PUT
Federated Hermes
FHI
$4.4B
| $1.07M | ﹤0.01% |
28,500
+18,800
| +194% | +$652K |
|
2766
PUT
Alpha Pro Tech
APT
$50.4M
| $1.07M | ﹤0.01% |
179,300
+145,900
| +437% | +$851K |
|
2767
CALL
Children's Place
PLCE
$53.6M
| $1.07M | ﹤0.01% |
13,500
-5,900
| -30% | -$519K |
|
2768
PUT
Factset
FDS
$9.05B
| $1.07M | ﹤0.01% |
2,200
+1,600
| +267% | +$717K |
|
|
ZH
2769
Zhihu
ZH
$270M
| $1.07M | ﹤0.01% |
32,187
+26,140
| +432% | +$1.25M |
|
2770
CALL
Cheesecake Factory
CAKE
$4.21B
| $1.07M | ﹤0.01% |
27,300
-13,000
| -32% | -$547K |
|
2771
PUT
WisdomTree US Total Dividend Fund
DTD
$1.65B
| $1.07M | ﹤0.01% |
23,500
+6,100
| +35% | +$380K |
|
2772
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $1.07M | ﹤0.01% |
10,089
-3,163
| -24% | -$337K |
|
2773
CALL
Eldorado Gold
EGO
$8.31B
| $1.07M | ﹤0.01% |
114,100
+52,900
| +86% | +$489K |
|
2774
On Holding
ONON
$11.9B
| $1.07M | ﹤0.01% |
+28,198
| New | +$1.03M |
|
2775
RingCentral
RNG
$4.05B
| $1.07M | ﹤0.01% |
+5,691
| New | +$1.26M |
|
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.