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 | |
|---|---|---|---|---|---|---|
4801
VanEck Biotech ETF
BBH
$406M
| $250K | ﹤0.01% |
1,548
+1,405
| +983% | +$228K |
|
4802
Comcast
CMCSA
$87.3B
| $250K | ﹤0.01% |
5,348
-135,705
| -96% | -$6.54M |
|
4803
CALL
Global Net Lease
GNL
$1.87B
| $250K | ﹤0.01% |
15,900
+8,200
| +106% | +$120K |
|
|
ISPO
4804
DELISTED
Inspirato
ISPO
| $250K | ﹤0.01% |
+1,262
| New | +$443K |
|
4805
CALL
KNOT Offshore Partners
KNOP
$354M
| $250K | ﹤0.01% |
14,800
-500
| -3% | -$7.72K |
|
4806
PUT
MaxLinear
MXL
$5.19B
| $250K | ﹤0.01% |
4,300
+1,800
| +72% | +$110K |
|
|
SJI
4807
DELISTED
South Jersey Industries, Inc.
SJI
| $250K | ﹤0.01% |
+7,242
| New | +$209K |
|
|
AVEO
4808
CALL
DELISTED
AVEO Pharmaceuticals, Inc.
AVEO
| $250K | ﹤0.01% |
44,800
-19,700
| -31% | -$81.2K |
|
4809
PUT
Federal Agricultural Mortgage Class A
AGM.A
$1.66B
| $249K | ﹤0.01% |
2,300
+1,200
| +109% | +$141K |
|
4810
PUT
Dine Brands
DIN
$462M
| $249K | ﹤0.01% |
3,200
-200
| -6% | -$14.9K |
|
4811
PUT
Fluence Energy
FLNC
$1.58B
| $249K | ﹤0.01% |
+19,000
| New | +$319K |
|
4812
Mercury Systems
MRCY
$5.41B
| $249K | ﹤0.01% |
3,866
-4,121
| -52% | -$245K |
|
4813
CALL
Protalix BioTherapeutics
PLX
$183M
| $249K | ﹤0.01% |
235,800
+171,600
| +267% | +$157K |
|
4814
Pinnacle West Capital
PNW
$12.4B
| $249K | ﹤0.01% |
3,194
-21,307
| -87% | -$1.52M |
|
4815
Companhia Siderúrgica Nacional
SID
$1.37B
| $249K | ﹤0.01% |
45,988
-46,093
| -50% | -$229K |
|
4816
CALL
B2Gold
BTG
$4.98B
| $248K | ﹤0.01% |
54,100
+23,900
| +79% | +$96K |
|
4817
PUT
FLEX LNG
FLNG
$1.69B
| $248K | ﹤0.01% |
+8,700
| New | +$194K |
|
4818
Goldgroup Mining Inc.
GORO
$155M
| $248K | ﹤0.01% |
110,993
+77,909
| +235% | +$144K |
|
4819
PUT
Health Catalyst
HCAT
$160M
| $248K | ﹤0.01% |
9,500
+9,400
| +9,400% | +$267K |
|
|
TBHC
4820
CALL
DELISTED
The Brand House Collective
TBHC
| $248K | ﹤0.01% |
26,700
-15,000
| -36% | -$214K |
|
4821
CALL
Newmark Group
NMRK
$2.64B
| $248K | ﹤0.01% |
15,600
-35,700
| -70% | -$582K |
|
|
AY
4822
PUT
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $248K | ﹤0.01% |
7,100
-8,000
| -53% | -$268K |
|
|
TRVN
4823
CALL
DELISTED
Trevena, Inc.
TRVN
| $248K | ﹤0.01% |
722
+317
| +78% | +$100K |
|
|
SDIG
4824
PUT
DELISTED
Stronghold Digital Mining, Inc. Class A Common Stock
SDIG
| $248K | ﹤0.01% |
4,240
+3,840
| +960% | +$403K |
|
|
AZPN
4825
PUT
DELISTED
ASPEN TECHNOLOGY INC
AZPN
| $248K | ﹤0.01% |
1,500
+1,200
| +400% | +$198K |
|
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 1,603 new positions and adding to 4,441 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 1,603 new positions and closed 1,637 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.