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 | |
|---|---|---|---|---|---|---|
5976
Sasol
SSL
$7.14B
| $71K | ﹤0.01% |
4,508
+1,816
| +67% | +$35.9K |
|
|
PRFT
5977
CALL
DELISTED
Perficient Inc
PRFT
| $71K | ﹤0.01% |
1,100
-4,800
| -81% | -$401K |
|
|
AMWD
5978
CALL
DELISTED
American Woodmark
AMWD
| $70K | ﹤0.01% |
1,600
-4,400
| -73% | -$215K |
|
5979
CALL
American Express Global Business Travel
GBTG
$4.93B
| $70K | ﹤0.01% |
12,400
-121,600
| -91% | -$813K |
|
5980
CALL
Liberty Latin America Class C
LILAK
$1.67B
| $70K | ﹤0.01% |
12,650
-880
| -7% | -$5.66K |
|
5981
PUT
Lesaka Technologies
LSAK
$415M
| $70K | ﹤0.01% |
+19,900
| New | +$100K |
|
5982
PUT
Noble Corp
NE
$6.52B
| $70K | ﹤0.01% |
2,400
-300
| -11% | -$8.86K |
|
5983
Offerpad Solutions
OPAD
$23.5M
| $70K | ﹤0.01% |
+387
| New | +$104K |
|
5984
CALL
Plexus
PLXS
$7.41B
| $70K | ﹤0.01% |
800
+700
| +700% | +$62.4K |
|
5985
Riot Platforms
RIOT
$8.15B
| $70K | ﹤0.01% |
10,100
| – | – |
|
5986
RLJ Lodging Trust
RLJ
$1.89B
| $70K | ﹤0.01% |
6,972
+3,257
| +88% | +$39.1K |
|
5987
CALL
RenaissanceRe
RNR
$13.4B
| $70K | ﹤0.01% |
500
-200
| -29% | -$27.8K |
|
|
SHCO
5988
DELISTED
Soho House & Co
SHCO
| $70K | ﹤0.01% |
+14,992
| New | +$94.1K |
|
5989
Simpson Manufacturing
SSD
$8.08B
| $70K | ﹤0.01% |
895
+311
| +53% | +$30.1K |
|
5990
PUT
Takeda Pharmaceutical
TAK
$52.9B
| $70K | ﹤0.01% |
5,400
+4,700
| +671% | +$65.4K |
|
5991
CALL
Tilly's
TLYS
$130M
| $70K | ﹤0.01% |
10,200
-1,900
| -16% | -$14.4K |
|
5992
PUT
TTEC Holdings
TTEC
$132M
| $70K | ﹤0.01% |
1,600
+700
| +78% | +$41.6K |
|
|
NESR
5993
National Energy Services Reunited Corp
NESR
$2.9B
| $70K | ﹤0.01% |
11,886
+11,577
| +3,747% | +$77.7K |
|
|
OMGA
5994
DELISTED
Omega Therapeutics, Inc. Common Stock
OMGA
| $70K | ﹤0.01% |
12,971
+5,076
| +64% | +$25.7K |
|
5995
PUT
Castor Maritime
CTRM
$20.3M
| $69K | ﹤0.01% |
6,200
-3,440
| -36% | -$49.2K |
|
5996
PUT
Fossil Group
FOSL
$360M
| $69K | ﹤0.01% |
20,400
-800
| -4% | -$4.1K |
|
5997
Group 1 Automotive
GPI
$3.41B
| $69K | ﹤0.01% |
484
+7
| +1% | +$1.2K |
|
5998
CALL
IDT Corp
IDT
$1.67B
| $69K | ﹤0.01% |
2,800
+1,000
| +56% | +$25.7K |
|
5999
PUT
Krystal Biotech
KRYS
$9.61B
| $69K | ﹤0.01% |
1,000
-200
| -17% | -$14.4K |
|
6000
Movado Group
MOV
$879M
| $69K | ﹤0.01% |
2,462
+1,742
| +242% | +$57.1K |
|
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.