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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
LADR
3351
CALL
Ladder Capital
LADR
$1.24B
| $419K | ﹤0.01% |
41,800
+11,500
| +38% | +$119K |
|
3352
CALL
MINISO
MNSO
$3.72B
| $419K | ﹤0.01% |
39,100
+38,700
| +9,675% | +$324K |
|
|
TEN
3353
PUT
Tsakos Energy Navigation Ltd
TEN
$1.18B
| $419K | ﹤0.01% |
24,800
+15,500
| +167% | +$271K |
|
3354
PUT
EVgo
EVGO
$220M
| $418K | ﹤0.01% |
93,700
+24,900
| +36% | +$161K |
|
3355
CALL
MSCI
MSCI
$41.5B
| $418K | ﹤0.01% |
900
-7,600
| -89% | -$3.54M |
|
3356
CALL
Noble Corp
NE
$6.88B
| $418K | ﹤0.01% |
11,100
+9,300
| +517% | +$331K |
|
|
SEE
3357
CALL
DELISTED
Sealed Air
SEE
| $418K | ﹤0.01% |
8,400
-9,900
| -54% | -$483K |
|
3358
Dow Inc
DOW
$20.8B
| $417K | ﹤0.01% |
8,280
-185,755
| -96% | -$9.07M |
|
3359
Magnite
MGNI
$2.73B
| $417K | ﹤0.01% |
+39,428
| New | +$360K |
|
3360
CALL
OR Royalties Inc
OR
$5.54B
| $417K | ﹤0.01% |
107,300
+83,100
| +343% | +$963K |
|
3361
Sprout Social
SPT
$500M
| $417K | ﹤0.01% |
7,397
-1,025
| -12% | -$60.1K |
|
3362
PUT
PagSeguro Digital
PAGS
$2.62B
| $416K | ﹤0.01% |
47,700
-41,900
| -47% | -$492K |
|
3363
PUT
Rogers Communications
RCI
$17.7B
| $416K | ﹤0.01% |
8,900
+7,700
| +642% | +$328K |
|
|
TWOU
3364
CALL
DELISTED
2U Inc
TWOU
| $416K | ﹤0.01% |
2,213
-104
| -4% | -$20.6K |
|
3365
PUT
Invesco DB Base Metals Fund
DBB
$308M
| $415K | ﹤0.01% |
22,900
-21,500
| -48% | -$412K |
|
3366
CALL
Ezcorp Inc
EZPW
$1.87B
| $414K | ﹤0.01% |
50,800
+1,000
| +2% | +$8.91K |
|
3367
CALL
HEICO Corp Class A
HEI.A
$36.3B
| $414K | ﹤0.01% |
2,700
+1,600
| +145% | +$195K |
|
3368
CALL
Tenaris
TS
$28.5B
| $414K | ﹤0.01% |
11,800
-3,300
| -22% | -$106K |
|
3369
CALL
ArcBest
ARCB
$3.31B
| $413K | ﹤0.01% |
5,900
-5,400
| -48% | -$417K |
|
|
CMPS
3370
CALL
Compass Pathways
CMPS
$1.52B
| $413K | ﹤0.01% |
51,500
-3,000
| -6% | -$30.1K |
|
|
PLL
3371
CALL
DELISTED
Piedmont Lithium
PLL
| $413K | ﹤0.01% |
9,400
-3,700
| -28% | -$205K |
|
3372
CALL
Axcelis
ACLS
$3.94B
| $412K | ﹤0.01% |
5,200
-14,300
| -73% | -$1.01M |
|
3373
PUT
Warrior Met Coal
HCC
$4.26B
| $412K | ﹤0.01% |
11,900
-39,100
| -77% | -$1.38M |
|
3374
PUT
Leggett & Platt
LEG
$1.5B
| $412K | ﹤0.01% |
12,800
| – | – |
|
|
BCYC
3375
PUT
Bicycle Therapeutics
BCYC
$276M
| $411K | ﹤0.01% |
13,900
+13,100
| +1,638% | +$351K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.