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 | |
|---|---|---|---|---|---|---|
|
RTB
5351
PUT
RTB Digital
RTB
$228M
| $113K | ﹤0.01% |
124
-27
| -18% | -$9.73K |
|
5352
CALL
Vericel Corp
VCEL
$2.37B
| $113K | ﹤0.01% |
4,900
-800
| -14% | -$21.8K |
|
|
ALBO
5353
DELISTED
Albireo Pharma Inc
ALBO
| $113K | ﹤0.01% |
5,865
+171
| +3% | +$3.54K |
|
|
ATHX
5354
PUT
DELISTED
Athersys, Inc. Common Stock
ATHX
| $113K | ﹤0.01% |
61,100
+56,788
| +1,317% | +$248K |
|
|
XELA
5355
CALL
DELISTED
Exela Technologies, Inc. Common Stock
XELA
| $113K | ﹤0.01% |
1,247
+1,226
| +5,838% | +$340K |
|
5356
Amplify CWP Enhanced Dividend Income ETF
DIVO
$7.77B
| $112K | ﹤0.01% |
3,520
-5,056
| -59% | -$175K |
|
5357
CALL
Essential Properties Realty Trust
EPRT
$6.64B
| $112K | ﹤0.01% |
5,800
+1,500
| +35% | +$34.2K |
|
5358
PUT
La-Z-Boy
LZB
$1.67B
| $112K | ﹤0.01% |
5,000
-5,600
| -53% | -$149K |
|
5359
Sabra Healthcare REIT
SBRA
$5.21B
| $112K | ﹤0.01% |
8,567
+8,113
| +1,787% | +$120K |
|
5360
CALL
Twist Bioscience
TWST
$6.19B
| $112K | ﹤0.01% |
3,200
+900
| +39% | +$38.2K |
|
|
AKLI
5361
CALL
DELISTED
Akili Inc
AKLI
| $112K | ﹤0.01% |
+49,700
| New | +$356K |
|
|
INTZ
5362
CALL
DELISTED
INTRUSION INC NEW
INTZ
| $112K | ﹤0.01% |
23,400
+21,900
| +1,460% | +$105K |
|
|
SBDS
5363
DELISTED
Solo Brands Inc
SBDS
| $112K | ﹤0.01% |
740
+145
| +24% | +$27.1K |
|
|
AFCG
5364
PUT
AFC Gamma
AFCG
$65.9M
| $111K | ﹤0.01% |
10,665
+7,743
| +265% | +$89.3K |
|
5365
Barnes & Noble Education
BNED
$447M
| $111K | ﹤0.01% |
465
+208
| +81% | +$55.6K |
|
5366
Crescent Energy
CRGY
$3.73B
| $111K | ﹤0.01% |
8,303
+3,422
| +70% | +$50.1K |
|
5367
PUT
Kymera Therapeutics
KYMR
$8.59B
| $111K | ﹤0.01% |
+5,100
| New | +$134K |
|
5368
PUT
Silicon Laboratories
SLAB
$7.2B
| $111K | ﹤0.01% |
900
-3,900
| -81% | -$521K |
|
|
YSG
5369
CALL
Yatsen Holding
YSG
$280M
| $111K | ﹤0.01% |
20,480
+12,280
| +150% | +$80.5K |
|
|
XIFR
5370
XPLR Infrastructure LP
XIFR
$1.11B
| $111K | ﹤0.01% |
+1,537
| New | +$123K |
|
5371
PUT
ACI Worldwide
ACIW
$5.82B
| $110K | ﹤0.01% |
+5,300
| New | +$132K |
|
|
AHRT
5372
PUT
AH Realty Trust
AHRT
$539M
| $110K | ﹤0.01% |
10,600
+1,300
| +14% | +$17K |
|
5373
Alpha Pro Tech
APT
$50.6M
| $110K | ﹤0.01% |
27,249
-17,443
| -39% | -$75.9K |
|
5374
CALL
Smartbird Inc
BIRD
$20M
| $110K | ﹤0.01% |
1,820
+460
| +34% | +$40.7K |
|
5375
PUT
Biomea Fusion
BMEA
$88.9M
| $110K | ﹤0.01% |
11,300
+11,200
| +11,200% | +$129K |
|
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.