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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1226
NiSource
NI
$22.4B
| $117K | 0.01% |
5,000
+714
| +17% | +$15.3K |
|
1227
CALL
Post Holdings
POST
$4.09B
| $117K | 0.01% |
304
+209
| +220% | +$8.82K |
|
|
MRD
1228
DELISTED
MEMORIAL RESOURCE DEV CORP COM STK (DE)
MRD
| $117K | 0.01% |
11,556
+9,215
| +394% | +$109K |
|
1229
PUT
Adobe
ADBE
$84.3B
| $116K | 0.01% |
1,652
+1,512
| +1,080% | +$131K |
|
1230
CALL
Automatic Data Processing
ADP
$97.1B
| $116K | 0.01% |
316
+81
| +34% | +$6.79K |
|
1231
CALL
Kinross Gold
KGC
$28.3B
| $116K | 0.01% |
1,292
+1,149
| +803% | +$2.85K |
|
1232
Plexus
PLXS
$7B
| $116K | 0.01% |
+2,936
| New | +$104K |
|
|
SCHW
1233
CALL
Charles Schwab
SCHW
$177B
| $116K | 0.01% |
529
+349
| +194% | +$9.21K |
|
1234
United Therapeutics
UTHR
$26.4B
| $116K | 0.01% |
+1,044
| New | +$132K |
|
1235
PUT
Verizon
VZ
$183B
| $116K | 0.01% |
1,693
+1,315
| +348% | +$65.8K |
|
|
KSU
1236
CALL
DELISTED
Kansas City Southern
KSU
| $116K | 0.01% |
48
-108
| -69% | -$8.43K |
|
1237
CALL
AvalonBay Communities
AVB
$27.3B
| $115K | 0.01% |
232
+198
| +582% | +$35K |
|
1238
CALL
Deere & Co
DE
$165B
| $115K | 0.01% |
1,149
+294
| +34% | +$23K |
|
1239
Edwards Lifesciences
EW
$48.3B
| $115K | 0.01% |
3,930
-37,905
| -91% | -$1.05M |
|
1240
CALL
Helmerich & Payne
HP
$3.5B
| $115K | 0.01% |
344
+40
| +13% | +$2.12K |
|
|
PPLI
1241
PUT
People Inc
PPLI
$3.14B
| $115K | 0.01% |
666
-5
| -0.7% | -$43 |
|
1242
CALL
PVH
PVH
$3.59B
| $115K | 0.01% |
267
+176
| +193% | +$13.9K |
|
1243
PUT
Royal Caribbean
RCL
$76B
| $115K | 0.01% |
318
-172
| -35% | -$13.4K |
|
1244
Carpenter Technology
CRS
$29.9B
| $114K | 0.01% |
+3,332
| New | +$98.2K |
|
1245
ProShares Trust UltraShort MSCI Emerging Markets
EEV
$2.4M
| $114K | 0.01% |
577
+379
| +191% | +$95.2K |
|
1246
Huntington Bancshares
HBAN
$35.2B
| $114K | 0.01% |
11,967
+6,003
| +101% | +$55.4K |
|
1247
PUT
Melco Resorts & Entertainment
MLCO
$2.16B
| $114K | 0.01% |
242
-168
| -41% | -$2.55K |
|
1248
PUT
Salesforce
CRM
$129B
| $113K | 0.01% |
979
-566
| -37% | -$39K |
|
1249
PUT
Electronic Arts
EA
$52.4B
| $113K | 0.01% |
775
+275
| +55% | +$17.5K |
|
1250
PUT
First Trust Capital Strength ETF
FTCS
$7.78B
| $113K | 0.01% |
293
+267
| +1,027% | +$9.94K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.