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 | |
|---|---|---|---|---|---|---|
3176
PUT
Fluence Energy
FLNC
$1.68B
| $637K | ﹤0.01% |
43,700
+30,100
| +221% | +$455K |
|
3177
CALL
Vuzix
VUZI
$187M
| $637K | ﹤0.01% |
110,100
+17,800
| +19% | +$137K |
|
|
CRON
3178
CALL
Cronos Group
CRON
$1.06B
| $636K | ﹤0.01% |
225,700
+14,000
| +7% | +$43.1K |
|
3179
PUT
IonQ
IONQ
$12.6B
| $636K | ﹤0.01% |
125,600
+37,300
| +42% | +$207K |
|
3180
PUT
PharmaCyte Biotech
PMCB
$6.33M
| $636K | ﹤0.01% |
265,000
-26,200
| -9% | -$66.3K |
|
3181
ProShares Ultra Euro
ULE
$4.29M
| $636K | ﹤0.01% |
66,523
-13,849
| -17% | -$141K |
|
3182
PUT
Cullen/Frost Bankers
CFR
$10.5B
| $634K | ﹤0.01% |
4,800
+700
| +17% | +$91.8K |
|
3183
KraneShares Global Carbon Strategy ETF
KRBN
$139M
| $634K | ﹤0.01% |
17,066
+9,889
| +138% | +$437K |
|
3184
CALL
Paysafe
PSFE
$463M
| $634K | ﹤0.01% |
38,308
+19,175
| +100% | +$429K |
|
3185
CALL
SL Green Realty
SLG
$3.77B
| $634K | ﹤0.01% |
15,800
-55,100
| -78% | -$2.56M |
|
3186
Public Storage
PSA
$61.7B
| $633K | ﹤0.01% |
2,162
+1,343
| +164% | +$437K |
|
3187
PUT
RCI Hospitality Holdings
RICK
$203M
| $633K | ﹤0.01% |
9,700
+5,600
| +137% | +$349K |
|
3188
CALL
GoodRx Holdings
GDRX
$1.06B
| $632K | ﹤0.01% |
135,400
+12,100
| +10% | +$76.3K |
|
3189
BILL Holdings
BILL
$4.62B
| $631K | ﹤0.01% |
4,771
-12,807
| -73% | -$1.84M |
|
3190
PUT
Honda
HMC
$39.3B
| $630K | ﹤0.01% |
29,200
+500
| +2% | +$12.6K |
|
3191
PUT
Transmedics
TMDX
$2.64B
| $630K | ﹤0.01% |
15,100
+14,100
| +1,410% | +$613K |
|
|
LSXMA
3192
DELISTED
Liberty Media Corporation Series A Liberty SiriusXM Common Stock
LSXMA
| $630K | ﹤0.01% |
22,548
+19,397
| +616% | +$574K |
|
3193
CALL
Coursera
COUR
$1.68B
| $628K | ﹤0.01% |
58,300
-400
| -0.7% | -$5.3K |
|
|
ME
3194
CALL
DELISTED
23andMe Holding Co
ME
| $628K | ﹤0.01% |
10,990
-2,230
| -17% | -$146K |
|
3195
Bunge Global
BG
$22.8B
| $627K | ﹤0.01% |
7,604
-4,918
| -39% | -$458K |
|
3196
CALL
Reliance Steel & Aluminium
RS
$21.2B
| $627K | ﹤0.01% |
3,600
-9,500
| -73% | -$1.75M |
|
3197
Citizens Financial Group
CFG
$30.8B
| $626K | ﹤0.01% |
+18,225
| New | +$674K |
|
3198
Community Health Systems
CYH
$393M
| $626K | ﹤0.01% |
291,530
+246,518
| +548% | +$817K |
|
|
DVAX
3199
PUT
DELISTED
Dynavax Technologies
DVAX
| $626K | ﹤0.01% |
60,000
+7,900
| +15% | +$103K |
|
|
LKFT
3200
CALL
Lakefront Biotherapeutics American Depositary Shares
LKFT
$1.84B
| $626K | ﹤0.01% |
14,700
-700
| -5% | -$35.9K |
|
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.