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 | |
|---|---|---|---|---|---|---|
3051
PUT
SkinHealth Systems
SKIN
$90.5M
| $716K | ﹤0.01% |
60,800
-244,500
| -80% | -$3.09M |
|
3052
CALL
Travel + Leisure Co
TNL
$4.81B
| $716K | ﹤0.01% |
21,000
+4,000
| +24% | +$169K |
|
3053
PUT
Smith & Wesson
SWBI
$657M
| $715K | ﹤0.01% |
69,000
+47,500
| +221% | +$628K |
|
3054
PUT
Liquidia Corp
LQDA
$7.72B
| $714K | ﹤0.01% |
131,400
+122,400
| +1,360% | +$687K |
|
|
NBIS
3055
PUT
Nebius Group N.V.
NBIS
$43.1B
| $714K | ﹤0.01% |
15,300
-12,100
| -44% | -$565K |
|
|
ABK
3056
PUT
DELISTED
Ambac Financial Group
ABK
| $714K | ﹤0.01% |
56,000
+17,900
| +47% | +$228K |
|
3057
CALL
Host Hotels & Resorts
HST
$17.4B
| $713K | ﹤0.01% |
44,900
-16,900
| -27% | -$294K |
|
3058
Plug Power
PLUG
$2.73B
| $713K | ﹤0.01% |
33,961
-50,229
| -60% | -$1.2M |
|
3059
CALL
TC Energy
TRP
$70.5B
| $713K | ﹤0.01% |
17,700
+6,600
| +59% | +$327K |
|
3060
TJX Companies
TJX
$178B
| $712K | ﹤0.01% |
+11,466
| New | +$720K |
|
3061
PUT
Fennec Pharmaceuticals
FENC
$345M
| $711K | ﹤0.01% |
87,900
+81,300
| +1,232% | +$558K |
|
3062
PUT
Freshworks
FRSH
$3.09B
| $709K | ﹤0.01% |
54,700
-20,900
| -28% | -$296K |
|
3063
Southwest Airlines
LUV
$22.7B
| $709K | ﹤0.01% |
23,018
+12,238
| +114% | +$458K |
|
3064
Molson Coors Class B
TAP
$7.97B
| $709K | ﹤0.01% |
14,781
+9,981
| +208% | +$541K |
|
3065
PUT
USA Compression Partners
USAC
$3.75B
| $708K | ﹤0.01% |
40,700
+24,900
| +158% | +$440K |
|
|
MTTR
3066
PUT
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $708K | ﹤0.01% |
186,900
-83,600
| -31% | -$368K |
|
3067
CALL
Brighthouse Financial
BHF
$3.66B
| $707K | ﹤0.01% |
16,300
-6,900
| -30% | -$314K |
|
3068
PUT
Community Health Systems
CYH
$393M
| $707K | ﹤0.01% |
329,100
+262,000
| +390% | +$868K |
|
3069
Direxion Daily Real Estate Bear 3X ETF
DRV
$24.9M
| $705K | ﹤0.01% |
10,457
+7,532
| +258% | +$349K |
|
3070
PUT
PetMed Express
PETS
$43M
| $704K | ﹤0.01% |
36,100
+1,000
| +3% | +$21.2K |
|
3071
PAR Technology
PAR
$707M
| $702K | ﹤0.01% |
23,792
-10,699
| -31% | -$397K |
|
3072
PUT
Pentair
PNR
$10.8B
| $702K | ﹤0.01% |
17,300
+12,400
| +253% | +$575K |
|
3073
CALL
Ocugen
OCGN
$420M
| $701K | ﹤0.01% |
394,100
+8,300
| +2% | +$20.7K |
|
3074
Viatris
VTRS
$20.8B
| $701K | ﹤0.01% |
82,350
-18,135
| -18% | -$179K |
|
3075
PUT
BioCryst Pharmaceuticals
BCRX
$2.48B
| $700K | ﹤0.01% |
55,600
-180,600
| -76% | -$2.32M |
|
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.