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 | |
|---|---|---|---|---|---|---|
2826
Blue Owl Capital
OWL
$6.39B
| $703K | ﹤0.01% |
66,408
-26,379
| -28% | -$279K |
|
|
FLG
2827
Flagstar Bank National Association
FLG
$5.77B
| $703K | ﹤0.01% |
+27,262
| New | +$730K |
|
|
HDRO
2828
DELISTED
Defiance Next Gen H2 ETF
HDRO
| $703K | ﹤0.01% |
+9,367
| New | +$717K |
|
2829
Domino's
DPZ
$11B
| $702K | ﹤0.01% |
2,027
-2,806
| -58% | -$981K |
|
2830
PUT
Manulife Financial
MFC
$72.6B
| $702K | ﹤0.01% |
39,400
+32,800
| +497% | +$559K |
|
2831
PUT
Riskified
RSKD
$672M
| $702K | ﹤0.01% |
152,100
+149,700
| +6,238% | +$697K |
|
2832
CALL
Amprius Technologies
AMPX
$1.31B
| $701K | ﹤0.01% |
+88,500
| New | +$811K |
|
2833
CALL
Natural Resource Partners
NRP
$1.3B
| $700K | ﹤0.01% |
12,900
+9,100
| +239% | +$397K |
|
|
BBIG
2834
PUT
DELISTED
Vinco Ventures, Inc. Common Stock
BBIG
| $700K | ﹤0.01% |
4,350
-3,535
| -45% | -$54.3K |
|
2835
Stratasys
SSYS
$697M
| $697K | ﹤0.01% |
58,785
-128,286
| -69% | -$1.71M |
|
|
TELL
2836
PUT
DELISTED
Tellurian Inc.
TELL
| $697K | ﹤0.01% |
415,000
-265,300
| -39% | -$665K |
|
2837
CALL
3D Systems Corp
DDD
$420M
| $695K | ﹤0.01% |
94,000
-137,100
| -59% | -$1.2M |
|
2838
PUT
United States Gasoline Fund
UGA
$148M
| $695K | ﹤0.01% |
11,600
-13,800
| -54% | -$795K |
|
2839
PUT
Arhaus
ARHS
$1.12B
| $694K | ﹤0.01% |
+71,200
| New | +$621K |
|
2840
CALL
Xcel Energy
XEL
$51B
| $694K | ﹤0.01% |
9,900
-3,300
| -25% | -$220K |
|
|
ABK
2841
CALL
DELISTED
Ambac Financial Group
ABK
| $694K | ﹤0.01% |
39,800
-35,600
| -47% | -$621K |
|
2842
CALL
Gogo Inc
GOGO
$515M
| $693K | ﹤0.01% |
47,000
-16,700
| -26% | -$241K |
|
2843
Kosmos Energy
KOS
$1.56B
| $693K | ﹤0.01% |
109,060
+25,624
| +31% | +$160K |
|
2844
PUT
Suburban Propane Partners
SPH
$1.23B
| $693K | ﹤0.01% |
45,700
+14,400
| +46% | +$231K |
|
2845
ProShares Short VIX Short-Term Futures ETF
SVXY
$223M
| $693K | ﹤0.01% |
23,622
+7,658
| +48% | +$207K |
|
2846
PUT
Herbalife
HLF
$1.23B
| $691K | ﹤0.01% |
46,500
+34,400
| +284% | +$599K |
|
2847
Aurinia Pharmaceuticals
AUPH
$1.97B
| $690K | ﹤0.01% |
159,900
+150,792
| +1,656% | +$875K |
|
2848
PUT
Targa Resources
TRGP
$60.4B
| $690K | ﹤0.01% |
9,400
+2,800
| +42% | +$195K |
|
2849
CALL
Bank OZK
OZK
$5.49B
| $689K | ﹤0.01% |
17,200
-2,400
| -12% | -$103K |
|
2850
Signet Jewelers
SIG
$3.55B
| $689K | ﹤0.01% |
10,146
+7,628
| +303% | +$486K |
|
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.