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 | |
|---|---|---|---|---|---|---|
4701
Haverty Furniture Companies
HVT
$397M
| $187K | ﹤0.01% |
7,544
-6,775
| -47% | -$184K |
|
4702
PUT
Lazard
LAZ
$4.13B
| $187K | ﹤0.01% |
5,900
+2,100
| +55% | +$75.5K |
|
4703
CALL
RBC Bearings
RBC
$17.4B
| $187K | ﹤0.01% |
+900
| New | +$207K |
|
4704
CALL
Safety Insurance
SAFT
$1.52B
| $187K | ﹤0.01% |
2,300
-6,300
| -73% | -$568K |
|
4705
CALL
Encore Capital Group
ECPG
$2.02B
| $186K | ﹤0.01% |
4,100
+3,800
| +1,267% | +$219K |
|
4706
ESS Tech
GWH
$22M
| $186K | ﹤0.01% |
3,040
+365
| +14% | +$21.6K |
|
4707
IonQ
IONQ
$13.6B
| $186K | ﹤0.01% |
+36,735
| New | +$204K |
|
4708
Snowflake
SNOW
$102B
| $186K | ﹤0.01% |
1,100
| – | – |
|
4709
CALL
Advanced Drainage Systems
WMS
$10.6B
| $186K | ﹤0.01% |
1,500
+600
| +67% | +$74.7K |
|
|
BECN
4710
CALL
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $186K | ﹤0.01% |
3,400
-3,000
| -47% | -$170K |
|
|
STOR
4711
DELISTED
STORE Capital Corporation
STOR
| $186K | ﹤0.01% |
+5,938
| New | +$169K |
|
|
BRG
4712
DELISTED
Bluerock Residential Growth REIT, Inc.
BRG
| $186K | ﹤0.01% |
6,964
-1,338
| -16% | -$35.2K |
|
4713
CALL
Ares Management
ARES
$28.9B
| $185K | ﹤0.01% |
3,000
+2,700
| +900% | +$189K |
|
4714
Federal Realty Investment Trust
FRT
$10.7B
| $185K | ﹤0.01% |
2,060
+1,530
| +289% | +$155K |
|
|
OPLN
4715
Openlane
OPLN
$4.21B
| $185K | ﹤0.01% |
16,601
+5,496
| +49% | +$82.5K |
|
4716
KLX Energy Services
KLXE
$45M
| $185K | ﹤0.01% |
+22,531
| New | +$135K |
|
4717
PUT
KNOT Offshore Partners
KNOP
$372M
| $185K | ﹤0.01% |
13,300
+9,200
| +224% | +$153K |
|
|
NINE
4718
CALL
DELISTED
Nine Energy Service
NINE
| $185K | ﹤0.01% |
70,300
+50,800
| +261% | +$143K |
|
4719
CALL
Simply Good Foods
SMPL
$901M
| $185K | ﹤0.01% |
5,800
-400
| -6% | -$13.1K |
|
|
SWTX
4720
PUT
DELISTED
SpringWorks Therapeutics
SWTX
| $185K | ﹤0.01% |
6,500
-9,300
| -59% | -$267K |
|
4721
CALL
AMC Global Media
AMCX
$492M
| $184K | ﹤0.01% |
9,100
+5,700
| +168% | +$157K |
|
4722
CALL
1-800-Flowers.com
FLWS
$250M
| $184K | ﹤0.01% |
28,500
+8,600
| +43% | +$76.1K |
|
|
ILPT
4723
CALL
Industrial Logistics Properties Trust
ILPT
$575M
| $184K | ﹤0.01% |
33,600
+18,300
| +120% | +$165K |
|
|
OPTN
4724
CALL
DELISTED
OptiNose
OPTN
| $184K | ﹤0.01% |
+3,360
| New | +$184K |
|
|
YMAB
4725
CALL
DELISTED
Y-mAbs Therapeutics
YMAB
| $184K | ﹤0.01% |
12,800
-500
| -4% | -$8.28K |
|
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.