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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3001
Direxion Daily Semiconductor Bull 3X ETF
SOXL
$18.7B
| $587K | ﹤0.01% |
60,718
-92,888
| -60% | -$977K |
|
|
KNDI
3002
CALL
Kandi Technologies Group
KNDI
$64.6M
| $586K | ﹤0.01% |
254,900
-3,800
| -1% | -$9.96K |
|
|
BERY
3003
PUT
DELISTED
Berry Global Group, Inc.
BERY
| $586K | ﹤0.01% |
10,563
-109,989
| -91% | -$5.39M |
|
3004
CALL
Workhorse Group
WKHS
$30.2M
| $585K | ﹤0.01% |
128
-18
| -12% | -$124K |
|
|
TCN
3005
CALL
DELISTED
Tricon Residential Inc.
TCN
| $585K | ﹤0.01% |
75,900
+56,900
| +299% | +$475K |
|
|
AIMC
3006
CALL
DELISTED
Altra Industrial Motion Corp
AIMC
| $585K | ﹤0.01% |
9,800
+9,000
| +1,125% | +$473K |
|
3007
PUT
Rogers Corp
ROG
$2.31B
| $584K | ﹤0.01% |
4,900
-1,300
| -21% | -$202K |
|
|
WEBR
3008
CALL
DELISTED
Weber Inc.
WEBR
| $583K | ﹤0.01% |
72,500
-82,400
| -53% | -$575K |
|
|
ARR
3009
PUT
Armour Residential REIT
ARR
$2.01B
| $582K | ﹤0.01% |
20,700
+1,840
| +10% | +$50.2K |
|
3010
PUT
Samsara
IOT
$20.6B
| $581K | ﹤0.01% |
46,800
+32,600
| +230% | +$371K |
|
|
SOND
3011
PUT
DELISTED
Sonder
SOND
| $581K | ﹤0.01% |
23,440
+17,530
| +297% | +$620K |
|
3012
CALL
Telos
TLS
$346M
| $581K | ﹤0.01% |
114,200
+113,800
| +28,450% | +$753K |
|
3013
CALL
Appian
APPN
$1.88B
| $579K | ﹤0.01% |
17,800
+9,300
| +109% | +$367K |
|
3014
CALL
Avery Dennison
AVY
$12.5B
| $579K | ﹤0.01% |
3,200
+2,100
| +191% | +$374K |
|
3015
CALL
Howmet Aerospace
HWM
$115B
| $579K | ﹤0.01% |
14,700
+5,800
| +65% | +$211K |
|
3016
CALL
Marriott Vacations Worldwide
VAC
$3.4B
| $578K | ﹤0.01% |
4,300
+400
| +10% | +$55.8K |
|
3017
CALL
Portillo's
PTLO
$338M
| $577K | ﹤0.01% |
35,400
-25,300
| -42% | -$507K |
|
3018
PUT
PTC
PTC
$14.5B
| $576K | ﹤0.01% |
4,800
-7,900
| -62% | -$945K |
|
3019
PUT
Martin Marietta Materials
MLM
$34.3B
| $574K | ﹤0.01% |
1,700
-6,700
| -80% | -$2.29M |
|
3020
PG&E
PCG
$47.2B
| $573K | ﹤0.01% |
+35,295
| New | +$534K |
|
|
SBOW
3021
DELISTED
SilverBow Resources, Inc.
SBOW
| $573K | ﹤0.01% |
20,270
-4,963
| -20% | -$157K |
|
3022
CALL
WEX
WEX
$6.17B
| $572K | ﹤0.01% |
3,500
+2,000
| +133% | +$311K |
|
3023
Amplify Energy
AMPY
$155M
| $570K | ﹤0.01% |
64,933
-94,518
| -59% | -$804K |
|
3024
CALL
Artisan Partners
APAM
$2.86B
| $570K | ﹤0.01% |
19,200
-26,700
| -58% | -$820K |
|
3025
Shake Shack
SHAK
$2.48B
| $570K | ﹤0.01% |
+13,728
| New | +$669K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.