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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3701
Mattel
MAT
$4.38B
| $407K | ﹤0.01% |
+21,500
| New | +$481K |
|
3702
CALL
TaskUs
TASK
$556M
| $407K | ﹤0.01% |
25,300
-3,900
| -13% | -$68.8K |
|
3703
CALL
U-Haul Holding Co
UHAL
$13.9B
| $407K | ﹤0.01% |
8,000
-12,000
| -60% | -$629K |
|
3704
PUT
Avery Dennison
AVY
$13B
| $406K | ﹤0.01% |
2,500
+2,200
| +733% | +$399K |
|
3705
Westlake Corp
WLK
$9.03B
| $406K | ﹤0.01% |
4,682
+288
| +7% | +$27.6K |
|
|
STSA
3706
DELISTED
Satsuma Pharmaceuticals, Inc. Common Stock
STSA
| $406K | ﹤0.01% |
+67,823
| New | +$385K |
|
3707
PUT
DHT Holdings
DHT
$2.99B
| $405K | ﹤0.01% |
53,600
+15,800
| +42% | +$118K |
|
3708
CALL
Getty Images
GETY
$156M
| $405K | ﹤0.01% |
+59,700
| New | +$1.13M |
|
3709
PUT
Uranium Energy
UEC
$4.75B
| $405K | ﹤0.01% |
115,900
-309,400
| -73% | -$1.18M |
|
|
CCEC
3710
CALL
Capital Clean Energy Carriers
CCEC
$1.34B
| $405K | ﹤0.01% |
30,300
+29,300
| +2,930% | +$427K |
|
3711
PUT
Beazer Homes USA
BZH
$877M
| $404K | ﹤0.01% |
41,800
+11,400
| +38% | +$156K |
|
3712
CALL
FNB Corp
FNB
$6.73B
| $404K | ﹤0.01% |
34,900
-45,300
| -56% | -$537K |
|
3713
Macerich
MAC
$7.33B
| $403K | ﹤0.01% |
+50,793
| New | +$493K |
|
|
PPL
3714
PUT
PPL Corp
PPL
$26.5B
| $403K | ﹤0.01% |
15,900
-1,900
| -11% | -$54.4K |
|
|
SCS
3715
CALL
DELISTED
Steelcase
SCS
| $403K | ﹤0.01% |
61,900
+23,600
| +62% | +$252K |
|
3716
PUT
Vanguard FTSE Developed Markets ETF
VEA
$229B
| $403K | ﹤0.01% |
11,100
-1,800
| -14% | -$73.3K |
|
|
AJRD
3717
PUT
DELISTED
Aerojet Rocketdyne Holdings
AJRD
| $403K | ﹤0.01% |
10,100
+4,700
| +87% | +$199K |
|
3718
Blink Charging
BLNK
$74.3M
| $402K | ﹤0.01% |
22,713
+20,813
| +1,095% | +$427K |
|
3719
CALL
Dorman Products
DORM
$3.98B
| $402K | ﹤0.01% |
4,900
+1,500
| +44% | +$148K |
|
3720
PUT
Marriott Vacations Worldwide
VAC
$3.35B
| $402K | ﹤0.01% |
3,300
+2,800
| +560% | +$380K |
|
3721
Zillow
ZG
$7.94B
| $402K | ﹤0.01% |
14,066
-10,643
| -43% | -$371K |
|
|
CHX
3722
PUT
DELISTED
ChampionX
CHX
| $401K | ﹤0.01% |
20,500
-6,000
| -23% | -$124K |
|
3723
PUT
Kennametal
KMT
$2.59B
| $401K | ﹤0.01% |
19,500
+2,700
| +16% | +$65.4K |
|
|
SOND
3724
CALL
DELISTED
Sonder
SOND
| $401K | ﹤0.01% |
12,095
+10,405
| +616% | +$346K |
|
|
GLOP
3725
DELISTED
GASLOG PARTNERS LP
GLOP
| $401K | ﹤0.01% |
+77,904
| New | +$442K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.