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 | |
|---|---|---|---|---|---|---|
4626
CALL
Brookfield Renewable
BEPC
$5.86B
| $145K | ﹤0.01% |
5,300
+3,700
| +231% | +$114K |
|
|
DENN
4627
DELISTED
Denny's
DENN
| $145K | ﹤0.01% |
15,798
-10,873
| -41% | -$118K |
|
|
HEES
4628
PUT
DELISTED
H&E Equipment Services
HEES
| $145K | ﹤0.01% |
3,200
-2,000
| -38% | -$77.5K |
|
4629
CALL
ITT
ITT
$17.1B
| $145K | ﹤0.01% |
1,800
-3,200
| -64% | -$248K |
|
4630
Kayne Anderson Energy Infrastructure Fund
KYN
$2.42B
| $145K | ﹤0.01% |
17,020
+11,333
| +199% | +$98.2K |
|
4631
PUT
Pricesmart
PSMT
$5.94B
| $145K | ﹤0.01% |
+2,400
| New | +$157K |
|
4632
PUT
WD-40
WDFC
$2.98B
| $145K | ﹤0.01% |
900
-500
| -36% | -$83.4K |
|
|
AFCG
4633
PUT
AFC Gamma
AFCG
$60.9M
| $144K | ﹤0.01% |
13,441
+2,776
| +26% | +$31.2K |
|
4634
PUT
Cerus
CERS
$575M
| $144K | ﹤0.01% |
39,500
+4,000
| +11% | +$15.1K |
|
4635
Edison International
EIX
$30.3B
| $144K | ﹤0.01% |
+2,267
| New | +$139K |
|
4636
CALL
Flux Power
FLUX
$10.9M
| $144K | ﹤0.01% |
36,500
+23,300
| +177% | +$94.1K |
|
|
PVBC
4637
DELISTED
Provident Bancorp
PVBC
| $144K | ﹤0.01% |
+19,855
| New | +$201K |
|
4638
CALL
Saic
SAIC
$4.95B
| $144K | ﹤0.01% |
1,300
+1,000
| +333% | +$105K |
|
4639
CALL
Star Group
SGU
$413M
| $144K | ﹤0.01% |
12,000
+11,200
| +1,400% | +$104K |
|
4640
PUT
Upland Software
UPLD
$13.3M
| $144K | ﹤0.01% |
2,030
-22,980
| -92% | -$1.71M |
|
4641
CALL
Vericel Corp
VCEL
$2.38B
| $144K | ﹤0.01% |
5,500
+600
| +12% | +$14.3K |
|
4642
CALL
Yext
YEXT
$573M
| $144K | ﹤0.01% |
22,100
-8,000
| -27% | -$43.6K |
|
|
TVRD
4643
CALL
Tvardi Therapeutics
TVRD
$20.1M
| $144K | ﹤0.01% |
375
-31
| -8% | -$11.8K |
|
4644
CALL
Eton Pharmaceutcials
ETON
$1.32B
| $143K | ﹤0.01% |
50,800
-1,400
| -3% | -$3.76K |
|
4645
ProShares Ultra S&P500
SSO
$7.52B
| $143K | ﹤0.01% |
6,440
-41,436
| -87% | -$940K |
|
4646
Direxion Daily Technology Bull 3x ETF
TECL
$4.39B
| $143K | ﹤0.01% |
6,502
+6,302
| +3,151% | +$156K |
|
4647
CALL
Brookfield Infrastructure Partners
BIP
$19.6B
| $142K | ﹤0.01% |
4,600
-200
| -4% | -$6.99K |
|
4648
CALL
Herbalife
HLF
$1.3B
| $142K | ﹤0.01% |
9,600
-21,800
| -69% | -$380K |
|
|
PLYA
4649
DELISTED
Playa Hotels & Resorts
PLYA
| $142K | ﹤0.01% |
21,883
+2,913
| +15% | +$17.3K |
|
4650
PUT
Rollins
ROL
$18.6B
| $142K | ﹤0.01% |
3,900
+1,200
| +44% | +$46.6K |
|
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.