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 | |
|---|---|---|---|---|---|---|
551
CALL
Mercado Libre
MELI
$91.2B
| $9.27M | 0.01% |
94
-478
| -84% | -$358K |
|
552
CALL
Gaotu Techedu
GOTU
$396M
| $9.26M | 0.01% |
1,544
+1,450
| +1,543% | +$57.4K |
|
553
PUT
Fidelity National Information Services
FIS
$21B
| $9.17M | 0.01% |
684
-247
| -27% | -$32.4K |
|
554
PUT
S&P Global
SPGI
$127B
| $9.16M | 0.01% |
278
-311
| -53% | -$93.5K |
|
555
PUT
Chegg
CHGG
$99.9M
| $9.13M | 0.01% |
1,357
+1,015
| +297% | +$54.2K |
|
|
PARA
556
CALL
DELISTED
Paramount Global Class B
PARA
| $9.06M | 0.01% |
3,940
+737
| +23% | +$14.2K |
|
557
CALL
Mondelez International
MDLZ
$78.1B
| $9.04M | 0.01% |
1,768
-335
| -16% | -$17.2K |
|
558
CALL
PG&E
PCG
$39.9B
| $9.03M | 0.01% |
10,175
+3,668
| +56% | +$40K |
|
559
PUT
BioMarin Pharmaceuticals
BMRN
$11.3B
| $9.02M | 0.01% |
731
+34
| +5% | +$3.38K |
|
560
CALL
Wheaton Precious Metals
WPM
$50.6B
| $8.99M | 0.01% |
2,042
+147
| +8% | +$5.78K |
|
561
CALL
EOG Resources
EOG
$76.7B
| $8.99M | 0.01% |
1,774
+371
| +26% | +$18K |
|
562
CALL
Honeywell
HON
$73.8B
| $8.98M | 0.01% |
660
-178
| -21% | -$23.6K |
|
563
Sea Limited
SE
$64.2B
| $8.93M | 0.01% |
83,255
+27,723
| +50% | +$2.01M |
|
564
PUT
Norfolk Southern
NSC
$74.3B
| $8.87M | 0.01% |
505
+196
| +63% | +$33.2K |
|
565
CALL
Arista Networks
ANET
$220B
| $8.84M | 0.01% |
6,736
+3,024
| +81% | +$40.9K |
|
566
PUT
DraftKings
DKNG
$11.3B
| $8.83M | 0.01% |
2,656
+1,878
| +241% | +$51.9K |
|
567
PUT
Lumen
LUMN
$6.9B
| $8.8M | 0.01% |
8,779
+5,409
| +161% | +$54.1K |
|
568
PUT
Elevance Health
ELV
$84.4B
| $8.78M | 0.01% |
334
-472
| -59% | -$126K |
|
569
PUT
CME Group
CME
$90.1B
| $8.78M | 0.01% |
540
+189
| +54% | +$33.9K |
|
570
CALL
PNC Financial Services
PNC
$101B
| $8.75M | 0.01% |
832
+209
| +34% | +$22K |
|
571
CALL
Norwegian Cruise Line
NCLH
$8.87B
| $8.75M | 0.01% |
5,327
+2,415
| +83% | +$35.4K |
|
572
Caterpillar
CAT
$410B
| $8.7M | 0.01% |
+68,807
| New | +$8.16M |
|
573
PUT
Colgate-Palmolive
CL
$73.3B
| $8.69M | 0.01% |
1,186
+505
| +74% | +$35.9K |
|
574
PUT
Petrobras
PBR
$122B
| $8.68M | 0.01% |
10,490
+417
| +4% | +$3.02K |
|
|
ZEN
575
PUT
DELISTED
ZENDESK INC
ZEN
| $8.66M | 0.01% |
978
+431
| +79% | +$33.2K |
|
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.