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 | |
|---|---|---|---|---|---|---|
|
WW
476
PUT
DELISTED
WW International
WW
| $467K | 0.04% |
1,324
+314
| +31% | +$4.27K |
|
|
SHPG
477
CALL
DELISTED
Shire pic
SHPG
| $467K | 0.04% |
534
+496
| +1,305% | +$83.1K |
|
478
Infosys
INFY
$44.3B
| $465K | 0.04% |
48,922
-18,564
| -28% | -$162K |
|
479
CALL
NetEase
NTES
$77.6B
| $464K | 0.04% |
2,330
+1,375
| +144% | +$41.2K |
|
480
Invesco DB US Dollar Index Bullish Fund
UUP
$432M
| $464K | 0.04% |
+18,925
| New | +$478K |
|
481
PUT
Occidental Petroleum
OXY
$57.2B
| $462K | 0.04% |
1,549
-458
| -23% | -$30.7K |
|
482
PUT
Procter & Gamble
PG
$347B
| $462K | 0.04% |
4,205
+801
| +24% | +$64.5K |
|
483
PUT
McDonald's
MCD
$187B
| $459K | 0.04% |
5,235
+3,669
| +234% | +$438K |
|
|
DATA
484
DELISTED
Tableau Software, Inc.
DATA
| $459K | 0.04% |
+10,014
| New | +$581K |
|
|
STI
485
DELISTED
SunTrust Banks, Inc.
STI
| $458K | 0.04% |
+12,711
| New | +$458K |
|
486
Eastman Chemical
EMN
$7.93B
| $457K | 0.04% |
+6,339
| New | +$415K |
|
487
CALL
Wells Fargo
WFC
$262B
| $457K | 0.04% |
3,897
+1,605
| +70% | +$78.6K |
|
488
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$108M
| $456K | 0.04% |
1,353
+242
| +22% | +$4.28K |
|
489
PUT
Eli Lilly
LLY
$1.04T
| $456K | 0.04% |
1,487
+695
| +88% | +$52.6K |
|
|
TFCFA
490
DELISTED
Twenty-First Century Fox, Inc. Class A
TFCFA
| $455K | 0.04% |
16,350
+12,208
| +295% | +$327K |
|
491
CALL
Charter Communications
CHTR
$15.9B
| $454K | 0.04% |
338
+216
| +177% | +$38.8K |
|
492
Boise Cascade
BCC
$2.73B
| $453K | 0.04% |
21,883
+21,083
| +2,635% | +$397K |
|
|
BLUE
493
PUT
DELISTED
bluebird bio
BLUE
| $453K | 0.04% |
12
-11
| -48% | -$6.76K |
|
|
X
494
DELISTED
US Steel
X
| $453K | 0.04% |
28,276
-115,155
| -80% | -$1.15M |
|
495
CALL
Acadia Pharmaceuticals
ACAD
$4.27B
| $450K | 0.04% |
1,337
+972
| +266% | +$21.2K |
|
|
TWX
496
PUT
DELISTED
Time Warner Inc
TWX
| $447K | 0.04% |
1,793
+547
| +44% | +$37.7K |
|
497
PUT
ProShares UltraShort Industrials
SIJ
$5.96M
| $446K | 0.04% |
50
-17
| -25% | -$11.7K |
|
|
GRA
498
DELISTED
W.R. Grace & Co.
GRA
| $446K | 0.04% |
+6,276
| New | +$479K |
|
499
Alnylam Pharmaceuticals
ALNY
$35.6B
| $445K | 0.04% |
+7,102
| New | +$472K |
|
500
Ciena
CIEN
$56.2B
| $443K | 0.04% |
23,326
-3,526
| -13% | -$65.1K |
|
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.