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 | |
|---|---|---|---|---|---|---|
3976
Southern Copper
SCCO
$140B
| $444K | ﹤0.01% |
6,323
-1,815
| -22% | -$116K |
|
3977
PUT
Voya Financial
VOYA
$9.07B
| $444K | ﹤0.01% |
6,700
+700
| +12% | +$47.8K |
|
3978
CALL
Aviat Networks
AVNW
$264M
| $443K | ﹤0.01% |
14,400
+2,300
| +19% | +$67.1K |
|
|
BPT
3979
CALL
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $443K | ﹤0.01% |
29,600
+22,900
| +342% | +$220K |
|
3980
PUT
Expeditors International
EXPD
$22.4B
| $443K | ﹤0.01% |
4,300
-200
| -4% | -$22.1K |
|
3981
PUT
Intellia Therapeutics
NTLA
$1.52B
| $443K | ﹤0.01% |
6,100
-1,400
| -19% | -$119K |
|
|
WW
3982
PUT
DELISTED
WW International
WW
| $443K | ﹤0.01% |
43,400
-35,300
| -45% | -$414K |
|
|
MMAT
3983
CALL
DELISTED
Meta Materials Inc. Common Stock
MMAT
| $443K | ﹤0.01% |
2,658
+957
| +56% | +$178K |
|
3984
PUT
Corteva
CTVA
$59.5B
| $442K | ﹤0.01% |
7,700
-53,500
| -87% | -$2.73M |
|
3985
PUT
Fulcrum Therapeutics
FULC
$248M
| $442K | ﹤0.01% |
18,700
+17,900
| +2,238% | +$253K |
|
3986
CALL
Saic
SAIC
$5.14B
| $442K | ﹤0.01% |
4,800
-1,100
| -19% | -$94.9K |
|
|
ETWO
3987
PUT
DELISTED
E2open Parent Holdings
ETWO
| $441K | ﹤0.01% |
50,100
-1,100
| -2% | -$9.99K |
|
3988
PUT
Interactive Brokers
IBKR
$40.5B
| $441K | ﹤0.01% |
26,800
-192,800
| -88% | -$3.32M |
|
3989
Iovance Biotherapeutics
IOVA
$2.1B
| $441K | ﹤0.01% |
26,505
-28,471
| -52% | -$440K |
|
3990
ARK Innovation ETF
ARKK
$5.74B
| $440K | ﹤0.01% |
6,638
-222,366
| -97% | -$15.7M |
|
3991
Talos Energy
TALO
$2.28B
| $440K | ﹤0.01% |
27,913
+3,026
| +12% | +$39.9K |
|
3992
PUT
Federated Hermes
FHI
$4.59B
| $439K | ﹤0.01% |
12,900
-15,600
| -55% | -$531K |
|
3993
MicroSectors FANG+ ETNs due Jan 8 2038
FNGS
$543M
| $439K | ﹤0.01% |
15,176
-10,644
| -41% | -$305K |
|
3994
PUT
Solid Power
SLDP
$475M
| $439K | ﹤0.01% |
50,700
-47,000
| -48% | -$365K |
|
|
TSE
3995
DELISTED
Trinseo
TSE
| $439K | ﹤0.01% |
9,179
+4,428
| +93% | +$233K |
|
|
BAND
3996
Bandwidth Inc
BAND
$1.67B
| $438K | ﹤0.01% |
13,535
+5,968
| +79% | +$286K |
|
3997
CALL
Moody's
MCO
$83.9B
| $438K | ﹤0.01% |
1,300
-4,300
| -77% | -$1.45M |
|
3998
PUT
ImmunityBio
IBRX
$7.3B
| $437K | ﹤0.01% |
77,900
-5,400
| -6% | -$33.1K |
|
3999
CALL
PagerDuty
PD
$795M
| $437K | ﹤0.01% |
12,800
-32,200
| -72% | -$1.04M |
|
4000
Sweetgreen
SG
$756M
| $437K | ﹤0.01% |
13,662
+13,062
| +2,177% | +$379K |
|
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.