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 | |
|---|---|---|---|---|---|---|
|
HIBB
3701
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $309K | ﹤0.01% |
+4,539
| New | +$283K |
|
|
VSTO
3702
CALL
DELISTED
Vista Outdoor Inc.
VSTO
| $309K | ﹤0.01% |
12,700
-17,000
| -57% | -$447K |
|
|
MAG
3703
DELISTED
MAG Silver
MAG
| $308K | ﹤0.01% |
19,755
+10,170
| +106% | +$148K |
|
|
TPH
3704
PUT
DELISTED
Tri Pointe Homes
TPH
| $308K | ﹤0.01% |
16,600
+11,800
| +246% | +$205K |
|
3705
PUT
Murphy USA
MUSA
$11.1B
| $307K | ﹤0.01% |
1,100
-300
| -21% | -$87K |
|
3706
CALL
Protagonist Therapeutics
PTGX
$8.8B
| $307K | ﹤0.01% |
28,200
+5,200
| +23% | +$43.9K |
|
3707
CALL
Trinity Industries
TRN
$3.03B
| $307K | ﹤0.01% |
10,400
+3,200
| +44% | +$89.2K |
|
|
PRFT
3708
CALL
DELISTED
Perficient Inc
PRFT
| $307K | ﹤0.01% |
4,400
+3,300
| +300% | +$228K |
|
3709
CALL
Middlesex Water
MSEX
$1.08B
| $306K | ﹤0.01% |
3,900
+3,800
| +3,800% | +$330K |
|
|
OTLY
3710
CALL
Oatly Group
OTLY
$473M
| $306K | ﹤0.01% |
8,800
-2,075
| -19% | -$79.2K |
|
3711
ProShares Short Real Estate
REK
$11.5M
| $306K | ﹤0.01% |
15,063
+10,406
| +223% | +$215K |
|
3712
Solid Power
SLDP
$475M
| $306K | ﹤0.01% |
120,741
+82,206
| +213% | +$351K |
|
|
LL
3713
PUT
DELISTED
LL Flooring Holdings, Inc.
LL
| $306K | ﹤0.01% |
54,600
+38,100
| +231% | +$267K |
|
|
CINC
3714
DELISTED
CinCor Pharma, Inc. Common Stock
CINC
| $306K | ﹤0.01% |
24,905
+24,293
| +3,969% | +$579K |
|
|
DOC
3715
PUT
DELISTED
PHYSICIANS REALTY TRUST
DOC
| $306K | ﹤0.01% |
21,200
-3,500
| -14% | -$50.8K |
|
3716
ProShares Ultra Silver
AGQ
$1.12B
| $305K | ﹤0.01% |
9,542
-38,337
| -80% | -$986K |
|
3717
CALL
Cirrus Logic
CRUS
$6.87B
| $305K | ﹤0.01% |
4,100
-19,900
| -83% | -$1.43M |
|
3718
Genius Sports
GENI
$1.95B
| $305K | ﹤0.01% |
+85,537
| New | +$376K |
|
3719
CALL
Sphere Entertainment
SPHR
$5.06B
| $305K | ﹤0.01% |
6,800
+2,700
| +66% | +$122K |
|
|
IMGN
3720
DELISTED
Immunogen Inc
IMGN
| $305K | ﹤0.01% |
61,680
+17,076
| +38% | +$92.6K |
|
3721
CALL
Capricor Therapeutics
CAPR
$380M
| $304K | ﹤0.01% |
79,000
+28,700
| +57% | +$137K |
|
|
HYFT
3722
CALL
MindWalk Holdings
HYFT
$63.5M
| $304K | ﹤0.01% |
58,500
+10,100
| +21% | +$51.2K |
|
3723
PUT
MidCap Financial Investment
MFIC
$811M
| $304K | ﹤0.01% |
26,700
+24,500
| +1,114% | +$282K |
|
3724
CALL
Zevra Therapeutics
ZVRA
$575M
| $304K | ﹤0.01% |
66,300
+4,100
| +7% | +$20.8K |
|
|
FITB
3725
Fifth Third Bancorp
FITB
$52.4B
| $303K | ﹤0.01% |
9,247
+2,539
| +38% | +$86.7K |
|
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.