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 | |
|---|---|---|---|---|---|---|
4101
CALL
MarineMax
HZO
$752M
| $221K | ﹤0.01% |
7,100
-32,500
| -82% | -$1.02M |
|
|
OPI
4102
PUT
DELISTED
Office Properties Income Trust
OPI
| $221K | ﹤0.01% |
16,600
+7,100
| +75% | +$102K |
|
4103
Sigma Lithium
SGML
$1.05B
| $221K | ﹤0.01% |
+7,833
| New | +$252K |
|
4104
CALL
Hyliion Holdings
HYLN
$572M
| $220K | ﹤0.01% |
94,400
+6,200
| +7% | +$16.8K |
|
4105
PUT
Ramaco Resources Class A
METC
$620M
| $220K | ﹤0.01% |
25,943
+18,191
| +235% | +$184K |
|
4106
CALL
MYR Group
MYRG
$5.01B
| $220K | ﹤0.01% |
2,400
+700
| +41% | +$63.5K |
|
4107
CALL
Neogen
NEOG
$2.03B
| $220K | ﹤0.01% |
14,500
+11,500
| +383% | +$164K |
|
4108
CALL
Navigator Holdings
NVGS
$1.35B
| $220K | ﹤0.01% |
18,400
+11,100
| +152% | +$135K |
|
4109
CALL
United States 12 Month Oil Fund,
USL
$45.4M
| $220K | ﹤0.01% |
+6,200
| New | +$217K |
|
4110
PUT
Alliance Resource Partners
ARLP
$3.34B
| $219K | ﹤0.01% |
10,800
-45,300
| -81% | -$1.03M |
|
|
HITI
4111
CALL
High Tide
HITI
$179M
| $219K | ﹤0.01% |
142,400
+39,800
| +39% | +$60.5K |
|
4112
CALL
La-Z-Boy
LZB
$1.63B
| $219K | ﹤0.01% |
9,600
-6,000
| -38% | -$146K |
|
|
VRNT
4113
DELISTED
Verint Systems
VRNT
| $219K | ﹤0.01% |
+6,053
| New | +$218K |
|
4114
PUT
Actinium Pharmaceuticals
ATNM
$26.3M
| $218K | ﹤0.01% |
20,500
+16,400
| +400% | +$166K |
|
4115
CALL
Dorman Products
DORM
$4.24B
| $218K | ﹤0.01% |
2,700
-2,200
| -45% | -$187K |
|
4116
CALL
Kearny Financial
KRNY
$602M
| $218K | ﹤0.01% |
21,500
| – | – |
|
4117
Manhattan Associates
MANH
$12.1B
| $218K | ﹤0.01% |
1,800
-1,491
| -45% | -$183K |
|
4118
Safe Bulkers
SB
$777M
| $218K | ﹤0.01% |
75,232
-128,329
| -63% | -$355K |
|
|
UCTT
4119
PUT
Ultra Clean Holdings
UCTT
$3.16B
| $218K | ﹤0.01% |
6,600
-2,700
| -29% | -$86.1K |
|
|
SEEL
4120
CALL
DELISTED
Seelos Therapeutics, Inc. Common Stock
SEEL
| $218K | ﹤0.01% |
84
-1
| -1% | -$3.49K |
|
|
CIR
4121
CALL
DELISTED
CIRCOR International, Inc
CIR
| $218K | ﹤0.01% |
9,100
+6,600
| +264% | +$148K |
|
4122
ProShares Ultra Dow30
DDM
$523M
| $217K | ﹤0.01% |
6,810
+5,282
| +346% | +$164K |
|
|
KYNB
4123
PUT
Kyntra Bio
KYNB
$27.9M
| $217K | ﹤0.01% |
544
-616
| -53% | -$236K |
|
4124
CALL
PharmaCyte Biotech
PMCB
$6.29M
| $217K | ﹤0.01% |
74,200
-700
| -0.9% | -$2K |
|
4125
CALL
Zai Lab
ZLAB
$2.07B
| $217K | ﹤0.01% |
7,100
-4,200
| -37% | -$132K |
|
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.