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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4851
PUT
Vuzix
VUZI
$178M
| $93K | ﹤0.01% |
392
+284
| +263% | +$588 |
|
|
SGI
4852
PUT
Somnigroup International
SGI
$14.4B
| $93K | ﹤0.01% |
52
-672
| -93% | -$9.64K |
|
|
ITI
4853
DELISTED
Iteris, Inc.
ITI
| $93K | ﹤0.01% |
19,690
+18,927
| +2,481% | +$79K |
|
|
GSS
4854
PUT
DELISTED
Golden Star Resources Ltd.
GSS
| $93K | ﹤0.01% |
321
+199
| +163% | +$517 |
|
|
PSXP
4855
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $93K | ﹤0.01% |
2,594
+1,130
| +77% | +$47K |
|
4856
CALL
Ardelyx
ARDX
$1.24B
| $92K | ﹤0.01% |
134
+126
| +1,575% | +$876 |
|
4857
Camtek
CAMT
$5.92B
| $92K | ﹤0.01% |
7,318
-8,360
| -53% | -$95K |
|
|
CARM
4858
CALL
DELISTED
Carisma Therapeutics
CARM
| $92K | ﹤0.01% |
64
+54
| +540% | +$728 |
|
4859
PUT
Enovis
ENOV
$1.74B
| $92K | ﹤0.01% |
19
-25
| -57% | -$1.1K |
|
4860
CALL
Green Brick Partners
GRBK
$3.09B
| $92K | ﹤0.01% |
+78
| New | +$747 |
|
4861
Groupon
GRPN
$1.03B
| $92K | ﹤0.01% |
5,079
+4,184
| +467% | +$93.1K |
|
4862
PUT
Inogen
INGN
$174M
| $92K | ﹤0.01% |
26
-6
| -19% | -$253 |
|
4863
PUT
Itron
ITRI
$4.48B
| $92K | ﹤0.01% |
14
-194
| -93% | -$12.4K |
|
4864
CALL
Marcus & Millichap
MMI
$1.2B
| $92K | ﹤0.01% |
+32
| New | +$902 |
|
4865
PUT
Global X MSCI Norway ETF
NORW
$86.1M
| $92K | ﹤0.01% |
56
-664
| -92% | -$13.3K |
|
|
ODP
4866
DELISTED
ODP
ODP
| $92K | ﹤0.01% |
3,916
+194
| +5% | +$4.23K |
|
4867
CALL
OneSpan
OSPN
$584M
| $92K | ﹤0.01% |
33
-43
| -57% | -$845 |
|
4868
Portland General Electric
POR
$5.82B
| $92K | ﹤0.01% |
+2,223
| New | +$102K |
|
4869
Q2 Holdings
QTWO
$3.78B
| $92K | ﹤0.01% |
+1,076
| New | +$82.7K |
|
|
VRAY
4870
CALL
DELISTED
ViewRay, Inc.
VRAY
| $92K | ﹤0.01% |
412
+151
| +58% | +$322 |
|
|
TGP
4871
PUT
DELISTED
Teekay LNG Partners L.P.
TGP
| $92K | ﹤0.01% |
79
+10
| +14% | +$113 |
|
|
AAN.A
4872
DELISTED
The Aaron's Company Inc Class A
AAN.A
| $92K | ﹤0.01% |
+2,030
| New | +$92K |
|
4873
Autohome
ATHM
$2.62B
| $91K | ﹤0.01% |
+1,208
| New | +$94.5K |
|
4874
CALL
CubeSmart
CUBE
$9.61B
| $91K | ﹤0.01% |
34
-59
| -63% | -$1.56K |
|
|
DENN
4875
DELISTED
Denny's
DENN
| $91K | ﹤0.01% |
+9,011
| New | +$92.5K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.