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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
8076
CALL
Knowles
KN
$3.27B
| $23K | ﹤0.01% |
1,100
-30,100
| -96% | -$659K |
|
8077
PUT
KULR Technology Group
KULR
$145M
| $23K | ﹤0.01% |
1,375
+737
| +116% | +$13.7K |
|
|
LAZR
8078
DELISTED
Luminar Technologies
LAZR
| $23K | ﹤0.01% |
99
| – | – |
|
8079
Liberty Global Class C
LBTYK
$3.47B
| $23K | ﹤0.01% |
895
-25,121
| -97% | -$672K |
|
|
LGMK
8080
PUT
DELISTED
LogicMark
LGMK
| $23K | ﹤0.01% |
21
-11
| -34% | -$15K |
|
8081
PUT
Lisata Therapeutics
LSTA
$10.2M
| $23K | ﹤0.01% |
2,213
+246
| +13% | +$2.81K |
|
|
CD
8082
PUT
Chaince Digital Holdings
CD
$367M
| $23K | ﹤0.01% |
+9,000
| New | +$27K |
|
8083
PUT
MACOM Technology Solutions
MTSI
$23.9B
| $23K | ﹤0.01% |
400
-4,900
| -92% | -$306K |
|
8084
iShares Global Materials ETF
MXI
$356M
| $23K | ﹤0.01% |
+250
| New | +$22.5K |
|
8085
CALL
Nkarta
NKTX
$168M
| $23K | ﹤0.01% |
2,100
-7,300
| -78% | -$78.1K |
|
8086
NerdWallet
NRDS
$640M
| $23K | ﹤0.01% |
+1,988
| New | +$25.5K |
|
8087
PUT
Northern Trust
NTRS
$34.8B
| $23K | ﹤0.01% |
200
-400
| -67% | -$47.4K |
|
8088
Ocular Therapeutix
OCUL
$2.24B
| $23K | ﹤0.01% |
4,809
-13,488
| -74% | -$74.8K |
|
8089
PUT
Pricesmart
PSMT
$5.54B
| $23K | ﹤0.01% |
300
-100
| -25% | -$7.37K |
|
|
RDHL
8090
Redhill Biopharma
RDHL
$3.59M
| $23K | ﹤0.01% |
9
-39
| -81% | -$92.5K |
|
8091
Rekor Systems
REKR
$98.1M
| $23K | ﹤0.01% |
5,254
-8,398
| -62% | -$39.5K |
|
8092
Richardson Electronics
RELL
$302M
| $23K | ﹤0.01% |
+1,864
| New | +$23.2K |
|
8093
CALL
Regenxbio
RGNX
$709M
| $23K | ﹤0.01% |
700
-1,700
| -71% | -$47.2K |
|
8094
CALL
Ryan Specialty Holdings
RYAN
$10.9B
| $23K | ﹤0.01% |
600
-100
| -14% | -$3.8K |
|
8095
CALL
Superior Group of Companies
SGC
$211M
| $23K | ﹤0.01% |
1,300
-200
| -13% | -$3.97K |
|
8096
PUT
Presidio Property Trust Inc Series A Warrants
SQFTW
$196K
| $23K | ﹤0.01% |
+6,500
| New | +$1.42K |
|
8097
CALL
Savara
SVRA
$1.09B
| $23K | ﹤0.01% |
17,600
+13,500
| +329% | +$16.3K |
|
8098
CALL
Turkcell
TKC
$4.75B
| $23K | ﹤0.01% |
6,000
+4,300
| +253% | +$15.4K |
|
8099
Telesat
TSAT
$800M
| $23K | ﹤0.01% |
1,123
-479
| -30% | -$10.7K |
|
8100
PUT
Twin Disc
TWIN
$348M
| $23K | ﹤0.01% |
+1,400
| New | +$18.4K |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,602 new positions and adding to 4,440 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,602 new positions and closed 1,638 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.