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 | |
|---|---|---|---|---|---|---|
6776
CALL
Oil States International
OIS
$489M
| $22K | ﹤0.01% |
3,000
-4,400
| -59% | -$27.2K |
|
6777
PUT
OppFi
OPFI
$800M
| $22K | ﹤0.01% |
10,900
+9,500
| +679% | +$21.4K |
|
6778
CALL
Penumbra
PEN
$12.7B
| $22K | ﹤0.01% |
100
| – | – |
|
6779
Invesco Semiconductors ETF
PSI
$2.29B
| $22K | ﹤0.01% |
687
-1,500
| -69% | -$50.1K |
|
6780
CALL
PTC Therapeutics
PTCT
$5.68B
| $22K | ﹤0.01% |
600
-1,700
| -74% | -$70.7K |
|
6781
PUT
Quantum-Si Incorporated
QSI
$155M
| $22K | ﹤0.01% |
12,300
-1,400
| -10% | -$3.61K |
|
|
SAGE
6782
PUT
DELISTED
Sage Therapeutics
SAGE
| $22K | ﹤0.01% |
600
-200
| -25% | -$7.64K |
|
6783
CALL
SKYX Platforms
SKYX
$147M
| $22K | ﹤0.01% |
8,900
-28,300
| -76% | -$79.7K |
|
6784
CALL
Snap-on
SNA
$21.2B
| $22K | ﹤0.01% |
100
-2,100
| -95% | -$475K |
|
6785
PUT
Tenable Holdings
TENB
$3.6B
| $22K | ﹤0.01% |
600
-1,500
| -71% | -$55K |
|
6786
PUT
TriplePoint Venture Growth BDC
TPVG
$184M
| $22K | ﹤0.01% |
2,200
-7,000
| -76% | -$84.7K |
|
|
TRTX
6787
CALL
TPG RE Finance Trust
TRTX
$612M
| $22K | ﹤0.01% |
3,300
-900
| -21% | -$6.64K |
|
|
TTSH
6788
DELISTED
Tile Shop Holdings
TTSH
| $22K | ﹤0.01% |
5,078
+4,150
| +447% | +$17.1K |
|
6789
CALL
UroGen Pharma
URGN
$1.86B
| $22K | ﹤0.01% |
2,500
+1,000
| +67% | +$9.47K |
|
|
UROY
6790
CALL
Uranium Royalty Corp
UROY
$1.3B
| $22K | ﹤0.01% |
9,300
-13,600
| -59% | -$33.1K |
|
6791
PUT
Valvoline
VVV
$4.9B
| $22K | ﹤0.01% |
700
+300
| +75% | +$9.08K |
|
|
VXRT
6792
DELISTED
Vaxart
VXRT
| $22K | ﹤0.01% |
23,485
-19,913
| -46% | -$28.1K |
|
6793
PUT
WhiteHorse Finance
WHF
$137M
| $22K | ﹤0.01% |
1,700
+400
| +31% | +$5.05K |
|
6794
WisdomTree
WT
$2.96B
| $22K | ﹤0.01% |
+4,072
| New | +$21.2K |
|
6795
CALL
Zedge
ZDGE
$38.6M
| $22K | ﹤0.01% |
12,500
+5,200
| +71% | +$11.2K |
|
|
LUCK
6796
Lucky Strike Entertainment
LUCK
$914M
| $22K | ﹤0.01% |
1,657
+1,438
| +657% | +$19.5K |
|
|
SYRS
6797
PUT
DELISTED
Syros Pharmaceuticals, Inc. Common Stock
SYRS
| $22K | ﹤0.01% |
6,200
+500
| +9% | +$2.17K |
|
|
CUTR
6798
CALL
DELISTED
Cutera, Inc.
CUTR
| $22K | ﹤0.01% |
500
-200
| -29% | -$9.12K |
|
|
LICY
6799
DELISTED
Li-Cycle Holdings Corp.
LICY
| $22K | ﹤0.01% |
579
-2,121
| -79% | -$95.2K |
|
|
IMGN
6800
PUT
DELISTED
Immunogen Inc
IMGN
| $22K | ﹤0.01% |
4,500
-36,500
| -89% | -$198K |
|
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.